id	sid	tid	token	lemma	pos
work_7gfl5pcgirgmxcf3hp5jw4icla	1	1	HISTORICAL	historical	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	1	2	NOTE	NOTE	NNP
work_7gfl5pcgirgmxcf3hp5jw4icla	1	3	Photovoltaic	Photovoltaic	NNP
work_7gfl5pcgirgmxcf3hp5jw4icla	1	4	Materials	material	NNS
work_7gfl5pcgirgmxcf3hp5jw4icla	1	5	During	during	IN
work_7gfl5pcgirgmxcf3hp5jw4icla	1	6	the	the	DT
work_7gfl5pcgirgmxcf3hp5jw4icla	1	7	worldwide	worldwide	JJ
work_7gfl5pcgirgmxcf3hp5jw4icla	1	8	energy	energy	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	1	9	crisis	crisis	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	1	10	in	in	IN
work_7gfl5pcgirgmxcf3hp5jw4icla	1	11	the	the	DT
work_7gfl5pcgirgmxcf3hp5jw4icla	1	12	1970s	1970	NNS
work_7gfl5pcgirgmxcf3hp5jw4icla	1	13	,	,	,
work_7gfl5pcgirgmxcf3hp5jw4icla	1	14	researchers	researcher	NNS
work_7gfl5pcgirgmxcf3hp5jw4icla	1	15	focused	focus	VBD
work_7gfl5pcgirgmxcf3hp5jw4icla	1	16	enormous	enormous	JJ
work_7gfl5pcgirgmxcf3hp5jw4icla	1	17	effort	effort	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	1	18	toward	toward	IN
work_7gfl5pcgirgmxcf3hp5jw4icla	1	19	developing	develop	VBG
work_7gfl5pcgirgmxcf3hp5jw4icla	1	20	new	new	JJ
work_7gfl5pcgirgmxcf3hp5jw4icla	1	21	energy	energy	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	1	22	sources	source	NNS
work_7gfl5pcgirgmxcf3hp5jw4icla	1	23	,	,	,
work_7gfl5pcgirgmxcf3hp5jw4icla	1	24	including	include	VBG
work_7gfl5pcgirgmxcf3hp5jw4icla	1	25	"	"	``
work_7gfl5pcgirgmxcf3hp5jw4icla	1	26	clean	clean	JJ
work_7gfl5pcgirgmxcf3hp5jw4icla	1	27	and	and	CC
work_7gfl5pcgirgmxcf3hp5jw4icla	1	28	inexhaust-	inexhaust-	JJ
work_7gfl5pcgirgmxcf3hp5jw4icla	1	29	ible	ible	JJ
work_7gfl5pcgirgmxcf3hp5jw4icla	1	30	"	"	''
work_7gfl5pcgirgmxcf3hp5jw4icla	1	31	solar	solar	JJ
work_7gfl5pcgirgmxcf3hp5jw4icla	1	32	power	power	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	1	33	.	.	.
work_7gfl5pcgirgmxcf3hp5jw4icla	2	1	Unlike	unlike	IN
work_7gfl5pcgirgmxcf3hp5jw4icla	2	2	electric	electric	JJ
work_7gfl5pcgirgmxcf3hp5jw4icla	2	3	genera-	genera-	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	2	4	tors	tor	NNS
work_7gfl5pcgirgmxcf3hp5jw4icla	2	5	,	,	,
work_7gfl5pcgirgmxcf3hp5jw4icla	2	6	solar	solar	JJ
work_7gfl5pcgirgmxcf3hp5jw4icla	2	7	cells	cell	NNS
work_7gfl5pcgirgmxcf3hp5jw4icla	2	8	have	have	VBP
work_7gfl5pcgirgmxcf3hp5jw4icla	2	9	no	no	DT
work_7gfl5pcgirgmxcf3hp5jw4icla	2	10	moving	move	VBG
work_7gfl5pcgirgmxcf3hp5jw4icla	2	11	parts	part	NNS
work_7gfl5pcgirgmxcf3hp5jw4icla	2	12	,	,	,
work_7gfl5pcgirgmxcf3hp5jw4icla	2	13	thus	thus	RB
work_7gfl5pcgirgmxcf3hp5jw4icla	2	14	eliminating	eliminate	VBG
work_7gfl5pcgirgmxcf3hp5jw4icla	2	15	one	one	CD
work_7gfl5pcgirgmxcf3hp5jw4icla	2	16	common	common	JJ
work_7gfl5pcgirgmxcf3hp5jw4icla	2	17	wear	wear	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	2	18	mecha-	mecha-	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	2	19	nism	nism	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	2	20	.	.	.
work_7gfl5pcgirgmxcf3hp5jw4icla	3	1	And	and	CC
work_7gfl5pcgirgmxcf3hp5jw4icla	3	2	unlike	unlike	IN
work_7gfl5pcgirgmxcf3hp5jw4icla	3	3	batteries	battery	NNS
work_7gfl5pcgirgmxcf3hp5jw4icla	3	4	or	or	CC
work_7gfl5pcgirgmxcf3hp5jw4icla	3	5	fuel	fuel	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	3	6	cells	cell	NNS
work_7gfl5pcgirgmxcf3hp5jw4icla	3	7	,	,	,
work_7gfl5pcgirgmxcf3hp5jw4icla	3	8	so-	so-	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	3	9	lar	lar	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	3	10	cells	cell	NNS
work_7gfl5pcgirgmxcf3hp5jw4icla	3	11	produce	produce	VBP
work_7gfl5pcgirgmxcf3hp5jw4icla	3	12	no	no	DT
work_7gfl5pcgirgmxcf3hp5jw4icla	3	13	pollution	pollution	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	3	14	from	from	IN
work_7gfl5pcgirgmxcf3hp5jw4icla	3	15	using	use	VBG
work_7gfl5pcgirgmxcf3hp5jw4icla	3	16	chemical	chemical	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	3	17	reactions	reaction	NNS
work_7gfl5pcgirgmxcf3hp5jw4icla	3	18	to	to	TO
work_7gfl5pcgirgmxcf3hp5jw4icla	3	19	produce	produce	VB
work_7gfl5pcgirgmxcf3hp5jw4icla	3	20	power	power	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	3	21	.	.	.
work_7gfl5pcgirgmxcf3hp5jw4icla	4	1	Small	small	JJ
work_7gfl5pcgirgmxcf3hp5jw4icla	4	2	solar	solar	JJ
work_7gfl5pcgirgmxcf3hp5jw4icla	4	3	cells	cell	NNS
work_7gfl5pcgirgmxcf3hp5jw4icla	4	4	placed	place	VBN
work_7gfl5pcgirgmxcf3hp5jw4icla	4	5	into	into	IN
work_7gfl5pcgirgmxcf3hp5jw4icla	4	6	arrays	array	NNS
work_7gfl5pcgirgmxcf3hp5jw4icla	4	7	can	can	MD
work_7gfl5pcgirgmxcf3hp5jw4icla	4	8	be	be	VB
work_7gfl5pcgirgmxcf3hp5jw4icla	4	9	used	use	VBN
work_7gfl5pcgirgmxcf3hp5jw4icla	4	10	to	to	TO
work_7gfl5pcgirgmxcf3hp5jw4icla	4	11	generate	generate	VB
work_7gfl5pcgirgmxcf3hp5jw4icla	4	12	power	power	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	4	13	in	in	IN
work_7gfl5pcgirgmxcf3hp5jw4icla	4	14	remote	remote	JJ
work_7gfl5pcgirgmxcf3hp5jw4icla	4	15	loca-	loca-	JJ
work_7gfl5pcgirgmxcf3hp5jw4icla	4	16	tions	tion	NNS
work_7gfl5pcgirgmxcf3hp5jw4icla	4	17	,	,	,
work_7gfl5pcgirgmxcf3hp5jw4icla	4	18	such	such	JJ
work_7gfl5pcgirgmxcf3hp5jw4icla	4	19	as	as	IN
work_7gfl5pcgirgmxcf3hp5jw4icla	4	20	for	for	IN
work_7gfl5pcgirgmxcf3hp5jw4icla	4	21	water	water	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	4	22	pumps	pump	NNS
work_7gfl5pcgirgmxcf3hp5jw4icla	4	23	in	in	IN
work_7gfl5pcgirgmxcf3hp5jw4icla	4	24	the	the	DT
work_7gfl5pcgirgmxcf3hp5jw4icla	4	25	deep	deep	JJ
work_7gfl5pcgirgmxcf3hp5jw4icla	4	26	desert	desert	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	4	27	,	,	,
work_7gfl5pcgirgmxcf3hp5jw4icla	4	28	navigational	navigational	JJ
work_7gfl5pcgirgmxcf3hp5jw4icla	4	29	beacon	beacon	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	4	30	buoys	buoy	NNS
work_7gfl5pcgirgmxcf3hp5jw4icla	4	31	at	at	IN
work_7gfl5pcgirgmxcf3hp5jw4icla	4	32	sea	sea	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	4	33	,	,	,
work_7gfl5pcgirgmxcf3hp5jw4icla	4	34	and	and	CC
work_7gfl5pcgirgmxcf3hp5jw4icla	4	35	satellites	satellite	NNS
work_7gfl5pcgirgmxcf3hp5jw4icla	4	36	in	in	IN
work_7gfl5pcgirgmxcf3hp5jw4icla	4	37	space	space	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	4	38	.	.	.
work_7gfl5pcgirgmxcf3hp5jw4icla	5	1	Thousands	thousand	NNS
work_7gfl5pcgirgmxcf3hp5jw4icla	5	2	of	of	IN
work_7gfl5pcgirgmxcf3hp5jw4icla	5	3	cells	cell	NNS
work_7gfl5pcgirgmxcf3hp5jw4icla	5	4	can	can	MD
work_7gfl5pcgirgmxcf3hp5jw4icla	5	5	work	work	VB
work_7gfl5pcgirgmxcf3hp5jw4icla	5	6	together	together	RB
work_7gfl5pcgirgmxcf3hp5jw4icla	5	7	as	as	IN
work_7gfl5pcgirgmxcf3hp5jw4icla	5	8	central	central	JJ
work_7gfl5pcgirgmxcf3hp5jw4icla	5	9	electric	electric	JJ
work_7gfl5pcgirgmxcf3hp5jw4icla	5	10	power	power	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	5	11	stations	station	NNS
work_7gfl5pcgirgmxcf3hp5jw4icla	5	12	,	,	,
work_7gfl5pcgirgmxcf3hp5jw4icla	5	13	or	or	CC
work_7gfl5pcgirgmxcf3hp5jw4icla	5	14	smaller	small	JJR
work_7gfl5pcgirgmxcf3hp5jw4icla	5	15	arrays	array	NNS
work_7gfl5pcgirgmxcf3hp5jw4icla	5	16	can	can	MD
work_7gfl5pcgirgmxcf3hp5jw4icla	5	17	power	power	VB
work_7gfl5pcgirgmxcf3hp5jw4icla	5	18	hand	hand	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	5	19	calculators	calculator	NNS
work_7gfl5pcgirgmxcf3hp5jw4icla	5	20	and	and	CC
work_7gfl5pcgirgmxcf3hp5jw4icla	5	21	portable	portable	JJ
work_7gfl5pcgirgmxcf3hp5jw4icla	5	22	telephones	telephone	NNS
work_7gfl5pcgirgmxcf3hp5jw4icla	5	23	.	.	.
work_7gfl5pcgirgmxcf3hp5jw4icla	6	1	They	-PRON-	PRP
work_7gfl5pcgirgmxcf3hp5jw4icla	6	2	can	can	MD
work_7gfl5pcgirgmxcf3hp5jw4icla	6	3	operate	operate	VB
work_7gfl5pcgirgmxcf3hp5jw4icla	6	4	almost	almost	RB
work_7gfl5pcgirgmxcf3hp5jw4icla	6	5	indefinitely	indefinitely	RB
work_7gfl5pcgirgmxcf3hp5jw4icla	6	6	if	if	IN
work_7gfl5pcgirgmxcf3hp5jw4icla	6	7	protected	protect	VBN
work_7gfl5pcgirgmxcf3hp5jw4icla	6	8	from	from	IN
work_7gfl5pcgirgmxcf3hp5jw4icla	6	9	damage	damage	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	6	10	.	.	.
work_7gfl5pcgirgmxcf3hp5jw4icla	7	1	The	the	DT
work_7gfl5pcgirgmxcf3hp5jw4icla	7	2	concepts	concept	NNS
work_7gfl5pcgirgmxcf3hp5jw4icla	7	3	and	and	CC
work_7gfl5pcgirgmxcf3hp5jw4icla	7	4	crude	crude	JJ
work_7gfl5pcgirgmxcf3hp5jw4icla	7	5	prototypes	prototype	NNS
work_7gfl5pcgirgmxcf3hp5jw4icla	7	6	for	for	IN
work_7gfl5pcgirgmxcf3hp5jw4icla	7	7	solar	solar	JJ
work_7gfl5pcgirgmxcf3hp5jw4icla	7	8	power	power	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	7	9	have	have	VBP
work_7gfl5pcgirgmxcf3hp5jw4icla	7	10	been	be	VBN
work_7gfl5pcgirgmxcf3hp5jw4icla	7	11	around	around	RB
work_7gfl5pcgirgmxcf3hp5jw4icla	7	12	for	for	IN
work_7gfl5pcgirgmxcf3hp5jw4icla	7	13	about	about	RB
work_7gfl5pcgirgmxcf3hp5jw4icla	7	14	a	a	DT
work_7gfl5pcgirgmxcf3hp5jw4icla	7	15	century	century	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	7	16	and	and	CC
work_7gfl5pcgirgmxcf3hp5jw4icla	7	17	a	a	DT
work_7gfl5pcgirgmxcf3hp5jw4icla	7	18	half	half	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	7	19	.	.	.
work_7gfl5pcgirgmxcf3hp5jw4icla	8	1	The	the	DT
work_7gfl5pcgirgmxcf3hp5jw4icla	8	2	theory	theory	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	8	3	behind	behind	IN
work_7gfl5pcgirgmxcf3hp5jw4icla	8	4	so-	so-	JJ
work_7gfl5pcgirgmxcf3hp5jw4icla	8	5	lar	lar	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	8	6	cells	cell	NNS
work_7gfl5pcgirgmxcf3hp5jw4icla	8	7	was	be	VBD
work_7gfl5pcgirgmxcf3hp5jw4icla	8	8	first	first	RB
work_7gfl5pcgirgmxcf3hp5jw4icla	8	9	touched	touch	VBN
work_7gfl5pcgirgmxcf3hp5jw4icla	8	10	on	on	IN
work_7gfl5pcgirgmxcf3hp5jw4icla	8	11	in	in	IN
work_7gfl5pcgirgmxcf3hp5jw4icla	8	12	1839	1839	CD
work_7gfl5pcgirgmxcf3hp5jw4icla	8	13	by	by	IN
work_7gfl5pcgirgmxcf3hp5jw4icla	8	14	the	the	DT
work_7gfl5pcgirgmxcf3hp5jw4icla	8	15	physicist	physicist	JJ
work_7gfl5pcgirgmxcf3hp5jw4icla	8	16	Becquerel	Becquerel	NNP
work_7gfl5pcgirgmxcf3hp5jw4icla	8	17	in	in	IN
work_7gfl5pcgirgmxcf3hp5jw4icla	8	18	France	France	NNP
work_7gfl5pcgirgmxcf3hp5jw4icla	8	19	.	.	.
work_7gfl5pcgirgmxcf3hp5jw4icla	9	1	Becquerel	Becquerel	NNP
work_7gfl5pcgirgmxcf3hp5jw4icla	9	2	experimented	experiment	VBD
work_7gfl5pcgirgmxcf3hp5jw4icla	9	3	with	with	IN
work_7gfl5pcgirgmxcf3hp5jw4icla	9	4	a	a	DT
work_7gfl5pcgirgmxcf3hp5jw4icla	9	5	solid	solid	JJ
work_7gfl5pcgirgmxcf3hp5jw4icla	9	6	electrode	electrode	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	9	7	im-	im-	NNS
work_7gfl5pcgirgmxcf3hp5jw4icla	9	8	mersed	merse	VBN
work_7gfl5pcgirgmxcf3hp5jw4icla	9	9	in	in	IN
work_7gfl5pcgirgmxcf3hp5jw4icla	9	10	an	an	DT
work_7gfl5pcgirgmxcf3hp5jw4icla	9	11	electrolyte	electrolyte	NNP
work_7gfl5pcgirgmxcf3hp5jw4icla	9	12	solution	solution	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	9	13	,	,	,
work_7gfl5pcgirgmxcf3hp5jw4icla	9	14	observ-	observ-	NNP
work_7gfl5pcgirgmxcf3hp5jw4icla	9	15	ing	e	VBG
work_7gfl5pcgirgmxcf3hp5jw4icla	9	16	that	that	IN
work_7gfl5pcgirgmxcf3hp5jw4icla	9	17	a	a	DT
work_7gfl5pcgirgmxcf3hp5jw4icla	9	18	voltage	voltage	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	9	19	developed	develop	VBN
work_7gfl5pcgirgmxcf3hp5jw4icla	9	20	when	when	WRB
work_7gfl5pcgirgmxcf3hp5jw4icla	9	21	light	light	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	9	22	fell	fall	VBD
work_7gfl5pcgirgmxcf3hp5jw4icla	9	23	upon	upon	IN
work_7gfl5pcgirgmxcf3hp5jw4icla	9	24	the	the	DT
work_7gfl5pcgirgmxcf3hp5jw4icla	9	25	electrode	electrode	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	9	26	.	.	.
work_7gfl5pcgirgmxcf3hp5jw4icla	10	1	This	this	DT
work_7gfl5pcgirgmxcf3hp5jw4icla	10	2	is	be	VBZ
work_7gfl5pcgirgmxcf3hp5jw4icla	10	3	called	call	VBN
work_7gfl5pcgirgmxcf3hp5jw4icla	10	4	the	the	DT
work_7gfl5pcgirgmxcf3hp5jw4icla	10	5	pho-	pho-	NNP
work_7gfl5pcgirgmxcf3hp5jw4icla	10	6	tovoltaic	tovoltaic	NNP
work_7gfl5pcgirgmxcf3hp5jw4icla	10	7	effect	effect	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	10	8	.	.	.
work_7gfl5pcgirgmxcf3hp5jw4icla	11	1	In	in	IN
work_7gfl5pcgirgmxcf3hp5jw4icla	11	2	1887	1887	CD
work_7gfl5pcgirgmxcf3hp5jw4icla	11	3	Heinrich	Heinrich	NNP
work_7gfl5pcgirgmxcf3hp5jw4icla	11	4	Rudolf	Rudolf	NNP
work_7gfl5pcgirgmxcf3hp5jw4icla	11	5	Hertz	Hertz	NNP
work_7gfl5pcgirgmxcf3hp5jw4icla	11	6	,	,	,
work_7gfl5pcgirgmxcf3hp5jw4icla	11	7	a	a	DT
work_7gfl5pcgirgmxcf3hp5jw4icla	11	8	physi-	physi-	JJ
work_7gfl5pcgirgmxcf3hp5jw4icla	11	9	cist	cist	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	11	10	in	in	IN
work_7gfl5pcgirgmxcf3hp5jw4icla	11	11	Germany	Germany	NNP
work_7gfl5pcgirgmxcf3hp5jw4icla	11	12	,	,	,
work_7gfl5pcgirgmxcf3hp5jw4icla	11	13	discovered	discover	VBD
work_7gfl5pcgirgmxcf3hp5jw4icla	11	14	the	the	DT
work_7gfl5pcgirgmxcf3hp5jw4icla	11	15	photoelec-	photoelec-	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	11	16	tric	tric	NNP
work_7gfl5pcgirgmxcf3hp5jw4icla	11	17	effect	effect	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	11	18	.	.	.
work_7gfl5pcgirgmxcf3hp5jw4icla	12	1	Hertz	Hertz	NNP
work_7gfl5pcgirgmxcf3hp5jw4icla	12	2	observed	observe	VBD
work_7gfl5pcgirgmxcf3hp5jw4icla	12	3	that	that	DT
work_7gfl5pcgirgmxcf3hp5jw4icla	12	4	ultraviolet	ultraviolet	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	12	5	light	light	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	12	6	could	could	MD
work_7gfl5pcgirgmxcf3hp5jw4icla	12	7	facilitate	facilitate	VB
work_7gfl5pcgirgmxcf3hp5jw4icla	12	8	a	a	DT
work_7gfl5pcgirgmxcf3hp5jw4icla	12	9	spark	spark	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	12	10	across	across	IN
work_7gfl5pcgirgmxcf3hp5jw4icla	12	11	an	an	DT
work_7gfl5pcgirgmxcf3hp5jw4icla	12	12	air	air	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	12	13	gap	gap	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	12	14	between	between	IN
work_7gfl5pcgirgmxcf3hp5jw4icla	12	15	metallic	metallic	JJ
work_7gfl5pcgirgmxcf3hp5jw4icla	12	16	electrodes	electrode	NNS
work_7gfl5pcgirgmxcf3hp5jw4icla	12	17	.	.	.
work_7gfl5pcgirgmxcf3hp5jw4icla	13	1	It	-PRON-	PRP
work_7gfl5pcgirgmxcf3hp5jw4icla	13	2	was	be	VBD
work_7gfl5pcgirgmxcf3hp5jw4icla	13	3	n't	not	RB
work_7gfl5pcgirgmxcf3hp5jw4icla	13	4	until	until	IN
work_7gfl5pcgirgmxcf3hp5jw4icla	13	5	1899	1899	CD
work_7gfl5pcgirgmxcf3hp5jw4icla	13	6	that	that	IN
work_7gfl5pcgirgmxcf3hp5jw4icla	13	7	Joseph	Joseph	NNP
work_7gfl5pcgirgmxcf3hp5jw4icla	13	8	J.	J.	NNP
work_7gfl5pcgirgmxcf3hp5jw4icla	13	9	Thomson	Thomson	NNP
work_7gfl5pcgirgmxcf3hp5jw4icla	13	10	(	(	-LRB-
work_7gfl5pcgirgmxcf3hp5jw4icla	13	11	discov-	discov-	NNP
work_7gfl5pcgirgmxcf3hp5jw4icla	13	12	erer	erer	NNP
work_7gfl5pcgirgmxcf3hp5jw4icla	13	13	of	of	IN
work_7gfl5pcgirgmxcf3hp5jw4icla	13	14	the	the	DT
work_7gfl5pcgirgmxcf3hp5jw4icla	13	15	electron	electron	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	13	16	)	)	-RRB-
work_7gfl5pcgirgmxcf3hp5jw4icla	13	17	and	and	CC
work_7gfl5pcgirgmxcf3hp5jw4icla	13	18	Philipp	Philipp	NNP
work_7gfl5pcgirgmxcf3hp5jw4icla	13	19	Edward	Edward	NNP
work_7gfl5pcgirgmxcf3hp5jw4icla	13	20	Anton	Anton	NNP
work_7gfl5pcgirgmxcf3hp5jw4icla	13	21	Lenard	Lenard	NNP
work_7gfl5pcgirgmxcf3hp5jw4icla	13	22	determined	determine	VBD
work_7gfl5pcgirgmxcf3hp5jw4icla	13	23	that	that	DT
work_7gfl5pcgirgmxcf3hp5jw4icla	13	24	light	light	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	13	25	was	be	VBD
work_7gfl5pcgirgmxcf3hp5jw4icla	13	26	causing	cause	VBG
work_7gfl5pcgirgmxcf3hp5jw4icla	13	27	the	the	DT
work_7gfl5pcgirgmxcf3hp5jw4icla	13	28	emission	emission	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	13	29	of	of	IN
work_7gfl5pcgirgmxcf3hp5jw4icla	13	30	electrons	electron	NNS
work_7gfl5pcgirgmxcf3hp5jw4icla	13	31	from	from	IN
work_7gfl5pcgirgmxcf3hp5jw4icla	13	32	the	the	DT
work_7gfl5pcgirgmxcf3hp5jw4icla	13	33	surface	surface	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	13	34	of	of	IN
work_7gfl5pcgirgmxcf3hp5jw4icla	13	35	a	a	DT
work_7gfl5pcgirgmxcf3hp5jw4icla	13	36	material	material	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	13	37	.	.	.
work_7gfl5pcgirgmxcf3hp5jw4icla	14	1	By	by	IN
work_7gfl5pcgirgmxcf3hp5jw4icla	14	2	1902	1902	CD
work_7gfl5pcgirgmxcf3hp5jw4icla	14	3	,	,	,
work_7gfl5pcgirgmxcf3hp5jw4icla	14	4	Lenard	Lenard	NNP
work_7gfl5pcgirgmxcf3hp5jw4icla	14	5	had	have	VBD
work_7gfl5pcgirgmxcf3hp5jw4icla	14	6	also	also	RB
work_7gfl5pcgirgmxcf3hp5jw4icla	14	7	shown	show	VBN
work_7gfl5pcgirgmxcf3hp5jw4icla	14	8	that	that	IN
work_7gfl5pcgirgmxcf3hp5jw4icla	14	9	the	the	DT
work_7gfl5pcgirgmxcf3hp5jw4icla	14	10	number	number	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	14	11	of	of	IN
work_7gfl5pcgirgmxcf3hp5jw4icla	14	12	electrons	electron	NNS
work_7gfl5pcgirgmxcf3hp5jw4icla	14	13	emitted	emit	VBN
work_7gfl5pcgirgmxcf3hp5jw4icla	14	14	per	per	IN
work_7gfl5pcgirgmxcf3hp5jw4icla	14	15	second	second	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	14	16	from	from	IN
work_7gfl5pcgirgmxcf3hp5jw4icla	14	17	a	a	DT
work_7gfl5pcgirgmxcf3hp5jw4icla	14	18	photoelectric	photoelectric	JJ
work_7gfl5pcgirgmxcf3hp5jw4icla	14	19	material	material	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	14	20	was	be	VBD
work_7gfl5pcgirgmxcf3hp5jw4icla	14	21	proportional	proportional	JJ
work_7gfl5pcgirgmxcf3hp5jw4icla	14	22	to	to	IN
work_7gfl5pcgirgmxcf3hp5jw4icla	14	23	the	the	DT
work_7gfl5pcgirgmxcf3hp5jw4icla	14	24	intensity	intensity	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	14	25	of	of	IN
work_7gfl5pcgirgmxcf3hp5jw4icla	14	26	the	the	DT
work_7gfl5pcgirgmxcf3hp5jw4icla	14	27	incident	incident	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	14	28	light	light	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	14	29	,	,	,
work_7gfl5pcgirgmxcf3hp5jw4icla	14	30	but	but	CC
work_7gfl5pcgirgmxcf3hp5jw4icla	14	31	that	that	IN
work_7gfl5pcgirgmxcf3hp5jw4icla	14	32	the	the	DT
work_7gfl5pcgirgmxcf3hp5jw4icla	14	33	energy	energy	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	14	34	of	of	IN
work_7gfl5pcgirgmxcf3hp5jw4icla	14	35	those	those	DT
work_7gfl5pcgirgmxcf3hp5jw4icla	14	36	electrons	electron	NNS
work_7gfl5pcgirgmxcf3hp5jw4icla	14	37	depended	depend	VBD
work_7gfl5pcgirgmxcf3hp5jw4icla	14	38	on	on	IN
work_7gfl5pcgirgmxcf3hp5jw4icla	14	39	the	the	DT
work_7gfl5pcgirgmxcf3hp5jw4icla	14	40	wave-	wave-	JJ
work_7gfl5pcgirgmxcf3hp5jw4icla	14	41	length	length	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	14	42	of	of	IN
work_7gfl5pcgirgmxcf3hp5jw4icla	14	43	the	the	DT
work_7gfl5pcgirgmxcf3hp5jw4icla	14	44	incident	incident	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	14	45	light	light	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	14	46	.	.	.
work_7gfl5pcgirgmxcf3hp5jw4icla	15	1	This	this	DT
work_7gfl5pcgirgmxcf3hp5jw4icla	15	2	result	result	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	15	3	was	be	VBD
work_7gfl5pcgirgmxcf3hp5jw4icla	15	4	puzzling	puzzle	VBG
work_7gfl5pcgirgmxcf3hp5jw4icla	15	5	and	and	CC
work_7gfl5pcgirgmxcf3hp5jw4icla	15	6	incomprehensible	incomprehensible	JJ
work_7gfl5pcgirgmxcf3hp5jw4icla	15	7	to	to	IN
work_7gfl5pcgirgmxcf3hp5jw4icla	15	8	the	the	DT
work_7gfl5pcgirgmxcf3hp5jw4icla	15	9	clas-	clas-	JJ
work_7gfl5pcgirgmxcf3hp5jw4icla	15	10	sical	sical	JJ
work_7gfl5pcgirgmxcf3hp5jw4icla	15	11	physics	physics	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	15	12	community	community	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	15	13	at	at	IN
work_7gfl5pcgirgmxcf3hp5jw4icla	15	14	the	the	DT
work_7gfl5pcgirgmxcf3hp5jw4icla	15	15	time	time	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	15	16	,	,	,
work_7gfl5pcgirgmxcf3hp5jw4icla	15	17	and	and	CC
work_7gfl5pcgirgmxcf3hp5jw4icla	15	18	was	be	VBD
work_7gfl5pcgirgmxcf3hp5jw4icla	15	19	not	not	RB
work_7gfl5pcgirgmxcf3hp5jw4icla	15	20	resolved	resolve	VBN
work_7gfl5pcgirgmxcf3hp5jw4icla	15	21	until	until	IN
work_7gfl5pcgirgmxcf3hp5jw4icla	15	22	1905	1905	CD
work_7gfl5pcgirgmxcf3hp5jw4icla	15	23	,	,	,
work_7gfl5pcgirgmxcf3hp5jw4icla	15	24	when	when	WRB
work_7gfl5pcgirgmxcf3hp5jw4icla	15	25	Albert	Albert	NNP
work_7gfl5pcgirgmxcf3hp5jw4icla	15	26	Einstein	Einstein	NNP
work_7gfl5pcgirgmxcf3hp5jw4icla	15	27	proposed	propose	VBD
work_7gfl5pcgirgmxcf3hp5jw4icla	15	28	a	a	DT
work_7gfl5pcgirgmxcf3hp5jw4icla	15	29	quantum	quantum	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	15	30	theory	theory	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	15	31	on	on	IN
work_7gfl5pcgirgmxcf3hp5jw4icla	15	32	the	the	DT
work_7gfl5pcgirgmxcf3hp5jw4icla	15	33	dual	dual	JJ
work_7gfl5pcgirgmxcf3hp5jw4icla	15	34	nature	nature	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	15	35	of	of	IN
work_7gfl5pcgirgmxcf3hp5jw4icla	15	36	light	light	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	15	37	.	.	.
work_7gfl5pcgirgmxcf3hp5jw4icla	16	1	It	-PRON-	PRP
work_7gfl5pcgirgmxcf3hp5jw4icla	16	2	was	be	VBD
work_7gfl5pcgirgmxcf3hp5jw4icla	16	3	primarily	primarily	RB
work_7gfl5pcgirgmxcf3hp5jw4icla	16	4	for	for	IN
work_7gfl5pcgirgmxcf3hp5jw4icla	16	5	this	this	DT
work_7gfl5pcgirgmxcf3hp5jw4icla	16	6	work	work	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	16	7	that	that	WDT
work_7gfl5pcgirgmxcf3hp5jw4icla	16	8	Einstein	Einstein	NNP
work_7gfl5pcgirgmxcf3hp5jw4icla	16	9	won	win	VBD
work_7gfl5pcgirgmxcf3hp5jw4icla	16	10	the	the	DT
work_7gfl5pcgirgmxcf3hp5jw4icla	16	11	Nobel	Nobel	NNP
work_7gfl5pcgirgmxcf3hp5jw4icla	16	12	Prize	Prize	NNP
work_7gfl5pcgirgmxcf3hp5jw4icla	16	13	in	in	IN
work_7gfl5pcgirgmxcf3hp5jw4icla	16	14	1921	1921	CD
work_7gfl5pcgirgmxcf3hp5jw4icla	16	15	.	.	.
work_7gfl5pcgirgmxcf3hp5jw4icla	17	1	Working	work	VBG
work_7gfl5pcgirgmxcf3hp5jw4icla	17	2	from	from	IN
work_7gfl5pcgirgmxcf3hp5jw4icla	17	3	the	the	DT
work_7gfl5pcgirgmxcf3hp5jw4icla	17	4	50-year	50-year	CD
work_7gfl5pcgirgmxcf3hp5jw4icla	17	5	-	-	HYPH
work_7gfl5pcgirgmxcf3hp5jw4icla	17	6	old	old	JJ
work_7gfl5pcgirgmxcf3hp5jw4icla	17	7	theories	theory	NNS
work_7gfl5pcgirgmxcf3hp5jw4icla	17	8	of	of	IN
work_7gfl5pcgirgmxcf3hp5jw4icla	17	9	Becquerel	Becquerel	NNP
work_7gfl5pcgirgmxcf3hp5jw4icla	17	10	,	,	,
work_7gfl5pcgirgmxcf3hp5jw4icla	17	11	Charles	Charles	NNP
work_7gfl5pcgirgmxcf3hp5jw4icla	17	12	Fritts	Fritts	NNP
work_7gfl5pcgirgmxcf3hp5jw4icla	17	13	constructed	construct	VBD
work_7gfl5pcgirgmxcf3hp5jw4icla	17	14	the	the	DT
work_7gfl5pcgirgmxcf3hp5jw4icla	17	15	first	first	JJ
work_7gfl5pcgirgmxcf3hp5jw4icla	17	16	actual	actual	JJ
work_7gfl5pcgirgmxcf3hp5jw4icla	17	17	solar	solar	JJ
work_7gfl5pcgirgmxcf3hp5jw4icla	17	18	cell	cell	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	17	19	in	in	IN
work_7gfl5pcgirgmxcf3hp5jw4icla	17	20	1889	1889	CD
work_7gfl5pcgirgmxcf3hp5jw4icla	17	21	by	by	IN
work_7gfl5pcgirgmxcf3hp5jw4icla	17	22	coating	coat	VBG
work_7gfl5pcgirgmxcf3hp5jw4icla	17	23	the	the	DT
work_7gfl5pcgirgmxcf3hp5jw4icla	17	24	semiconductor	semiconductor	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	17	25	selenium	selenium	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	17	26	with	with	IN
work_7gfl5pcgirgmxcf3hp5jw4icla	17	27	an	an	DT
work_7gfl5pcgirgmxcf3hp5jw4icla	17	28	ex-	ex-	XX
work_7gfl5pcgirgmxcf3hp5jw4icla	17	29	tremely	tremely	RB
work_7gfl5pcgirgmxcf3hp5jw4icla	17	30	thin	thin	JJ
work_7gfl5pcgirgmxcf3hp5jw4icla	17	31	layer	layer	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	17	32	of	of	IN
work_7gfl5pcgirgmxcf3hp5jw4icla	17	33	gold	gold	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	17	34	.	.	.
work_7gfl5pcgirgmxcf3hp5jw4icla	18	1	Though	though	IN
work_7gfl5pcgirgmxcf3hp5jw4icla	18	2	Fritts	Fritts	NNP
work_7gfl5pcgirgmxcf3hp5jw4icla	18	3	'	'	POS
work_7gfl5pcgirgmxcf3hp5jw4icla	18	4	prototype	prototype	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	18	5	cells	cell	NNS
work_7gfl5pcgirgmxcf3hp5jw4icla	18	6	succeeded	succeed	VBN
work_7gfl5pcgirgmxcf3hp5jw4icla	18	7	in	in	IN
work_7gfl5pcgirgmxcf3hp5jw4icla	18	8	converting	convert	VBG
work_7gfl5pcgirgmxcf3hp5jw4icla	18	9	only	only	RB
work_7gfl5pcgirgmxcf3hp5jw4icla	18	10	1	1	CD
work_7gfl5pcgirgmxcf3hp5jw4icla	18	11	%	%	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	18	12	of	of	IN
work_7gfl5pcgirgmxcf3hp5jw4icla	18	13	the	the	DT
work_7gfl5pcgirgmxcf3hp5jw4icla	18	14	incident	incident	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	18	15	sunlight	sunlight	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	18	16	into	into	IN
work_7gfl5pcgirgmxcf3hp5jw4icla	18	17	elec-	elec-	NNP
work_7gfl5pcgirgmxcf3hp5jw4icla	18	18	tricity	tricity	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	18	19	,	,	,
work_7gfl5pcgirgmxcf3hp5jw4icla	18	20	they	-PRON-	PRP
work_7gfl5pcgirgmxcf3hp5jw4icla	18	21	fostered	foster	VBD
work_7gfl5pcgirgmxcf3hp5jw4icla	18	22	visions	vision	NNS
work_7gfl5pcgirgmxcf3hp5jw4icla	18	23	of	of	IN
work_7gfl5pcgirgmxcf3hp5jw4icla	18	24	clean	clean	JJ
work_7gfl5pcgirgmxcf3hp5jw4icla	18	25	and	and	CC
work_7gfl5pcgirgmxcf3hp5jw4icla	18	26	inexhaustible	inexhaustible	JJ
work_7gfl5pcgirgmxcf3hp5jw4icla	18	27	power	power	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	18	28	(	(	-LRB-
work_7gfl5pcgirgmxcf3hp5jw4icla	18	29	which	which	WDT
work_7gfl5pcgirgmxcf3hp5jw4icla	18	30	must	must	MD
work_7gfl5pcgirgmxcf3hp5jw4icla	18	31	have	have	VB
work_7gfl5pcgirgmxcf3hp5jw4icla	18	32	seemed	seem	VBN
work_7gfl5pcgirgmxcf3hp5jw4icla	18	33	very	very	RB
work_7gfl5pcgirgmxcf3hp5jw4icla	18	34	desirable	desirable	JJ
work_7gfl5pcgirgmxcf3hp5jw4icla	18	35	in	in	IN
work_7gfl5pcgirgmxcf3hp5jw4icla	18	36	the	the	DT
work_7gfl5pcgirgmxcf3hp5jw4icla	18	37	dirty	dirty	JJ
work_7gfl5pcgirgmxcf3hp5jw4icla	18	38	,	,	,
work_7gfl5pcgirgmxcf3hp5jw4icla	18	39	early	early	JJ
work_7gfl5pcgirgmxcf3hp5jw4icla	18	40	days	day	NNS
work_7gfl5pcgirgmxcf3hp5jw4icla	18	41	of	of	IN
work_7gfl5pcgirgmxcf3hp5jw4icla	18	42	the	the	DT
work_7gfl5pcgirgmxcf3hp5jw4icla	18	43	industrial	industrial	NNP
work_7gfl5pcgirgmxcf3hp5jw4icla	18	44	revolution	revolution	NNP
work_7gfl5pcgirgmxcf3hp5jw4icla	18	45	)	)	-RRB-
work_7gfl5pcgirgmxcf3hp5jw4icla	18	46	.	.	.
work_7gfl5pcgirgmxcf3hp5jw4icla	19	1	Two	two	CD
work_7gfl5pcgirgmxcf3hp5jw4icla	19	2	years	year	NNS
work_7gfl5pcgirgmxcf3hp5jw4icla	19	3	after	after	IN
work_7gfl5pcgirgmxcf3hp5jw4icla	19	4	Fritts	Fritts	NNP
work_7gfl5pcgirgmxcf3hp5jw4icla	19	5	created	create	VBD
work_7gfl5pcgirgmxcf3hp5jw4icla	19	6	his	-PRON-	PRP$
work_7gfl5pcgirgmxcf3hp5jw4icla	19	7	first	first	JJ
work_7gfl5pcgirgmxcf3hp5jw4icla	19	8	cell	cell	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	19	9	,	,	,
work_7gfl5pcgirgmxcf3hp5jw4icla	19	10	R.	R.	NNP
work_7gfl5pcgirgmxcf3hp5jw4icla	19	11	Ap-	Ap-	NNP
work_7gfl5pcgirgmxcf3hp5jw4icla	19	12	pleyard	pleyard	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	19	13	wrote	write	VBD
work_7gfl5pcgirgmxcf3hp5jw4icla	19	14	excitedly	excitedly	RB
work_7gfl5pcgirgmxcf3hp5jw4icla	19	15	of	of	IN
work_7gfl5pcgirgmxcf3hp5jw4icla	19	16	"	"	``
work_7gfl5pcgirgmxcf3hp5jw4icla	19	17	the	the	DT
work_7gfl5pcgirgmxcf3hp5jw4icla	19	18	blessed	bless	VBN
work_7gfl5pcgirgmxcf3hp5jw4icla	19	19	vi-	vi-	IN
work_7gfl5pcgirgmxcf3hp5jw4icla	19	20	sion	sion	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	19	21	of	of	IN
work_7gfl5pcgirgmxcf3hp5jw4icla	19	22	the	the	DT
work_7gfl5pcgirgmxcf3hp5jw4icla	19	23	Sun	Sun	NNP
work_7gfl5pcgirgmxcf3hp5jw4icla	19	24	,	,	,
work_7gfl5pcgirgmxcf3hp5jw4icla	19	25	no	no	RB
work_7gfl5pcgirgmxcf3hp5jw4icla	19	26	longer	long	RBR
work_7gfl5pcgirgmxcf3hp5jw4icla	19	27	pouring	pour	VBG
work_7gfl5pcgirgmxcf3hp5jw4icla	19	28	his	-PRON-	PRP$
work_7gfl5pcgirgmxcf3hp5jw4icla	19	29	energies	energy	NNS
work_7gfl5pcgirgmxcf3hp5jw4icla	19	30	unrequited	unrequite	VBN
work_7gfl5pcgirgmxcf3hp5jw4icla	19	31	into	into	IN
work_7gfl5pcgirgmxcf3hp5jw4icla	19	32	space	space	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	19	33	,	,	,
work_7gfl5pcgirgmxcf3hp5jw4icla	19	34	but	but	CC
work_7gfl5pcgirgmxcf3hp5jw4icla	19	35	by	by	IN
work_7gfl5pcgirgmxcf3hp5jw4icla	19	36	means	mean	NNS
work_7gfl5pcgirgmxcf3hp5jw4icla	19	37	of	of	IN
work_7gfl5pcgirgmxcf3hp5jw4icla	19	38	photoelectric	photoelectric	JJ
work_7gfl5pcgirgmxcf3hp5jw4icla	19	39	cells	cell	NNS
work_7gfl5pcgirgmxcf3hp5jw4icla	19	40	...	...	NFP
work_7gfl5pcgirgmxcf3hp5jw4icla	19	41	gathered	gather	VBD
work_7gfl5pcgirgmxcf3hp5jw4icla	19	42	into	into	IN
work_7gfl5pcgirgmxcf3hp5jw4icla	19	43	electrical	electrical	JJ
work_7gfl5pcgirgmxcf3hp5jw4icla	19	44	storehouses	storehouse	NNS
work_7gfl5pcgirgmxcf3hp5jw4icla	19	45	to	to	IN
work_7gfl5pcgirgmxcf3hp5jw4icla	19	46	the	the	DT
work_7gfl5pcgirgmxcf3hp5jw4icla	19	47	total	total	JJ
work_7gfl5pcgirgmxcf3hp5jw4icla	19	48	extinction	extinction	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	19	49	of	of	IN
work_7gfl5pcgirgmxcf3hp5jw4icla	19	50	steam	steam	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	19	51	engines	engine	NNS
work_7gfl5pcgirgmxcf3hp5jw4icla	19	52	and	and	CC
work_7gfl5pcgirgmxcf3hp5jw4icla	19	53	the	the	DT
work_7gfl5pcgirgmxcf3hp5jw4icla	19	54	utter	utter	JJ
work_7gfl5pcgirgmxcf3hp5jw4icla	19	55	repression	repression	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	19	56	of	of	IN
work_7gfl5pcgirgmxcf3hp5jw4icla	19	57	smoke	smoke	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	19	58	.	.	.
work_7gfl5pcgirgmxcf3hp5jw4icla	19	59	"	"	''
work_7gfl5pcgirgmxcf3hp5jw4icla	20	1	Also	also	RB
work_7gfl5pcgirgmxcf3hp5jw4icla	20	2	in	in	IN
work_7gfl5pcgirgmxcf3hp5jw4icla	20	3	1889	1889	CD
work_7gfl5pcgirgmxcf3hp5jw4icla	20	4	,	,	,
work_7gfl5pcgirgmxcf3hp5jw4icla	20	5	Julius	Julius	NNP
work_7gfl5pcgirgmxcf3hp5jw4icla	20	6	Elster	Elster	NNP
work_7gfl5pcgirgmxcf3hp5jw4icla	20	7	and	and	CC
work_7gfl5pcgirgmxcf3hp5jw4icla	20	8	Hans	Hans	NNP
work_7gfl5pcgirgmxcf3hp5jw4icla	20	9	Ger-	Ger-	NNP
work_7gfl5pcgirgmxcf3hp5jw4icla	20	10	tel	tel	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	20	11	published	publish	VBD
work_7gfl5pcgirgmxcf3hp5jw4icla	20	12	the	the	DT
work_7gfl5pcgirgmxcf3hp5jw4icla	20	13	first	first	JJ
work_7gfl5pcgirgmxcf3hp5jw4icla	20	14	of	of	IN
work_7gfl5pcgirgmxcf3hp5jw4icla	20	15	a	a	DT
work_7gfl5pcgirgmxcf3hp5jw4icla	20	16	long	long	JJ
work_7gfl5pcgirgmxcf3hp5jw4icla	20	17	series	series	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	20	18	of	of	IN
work_7gfl5pcgirgmxcf3hp5jw4icla	20	19	papers	paper	NNS
work_7gfl5pcgirgmxcf3hp5jw4icla	20	20	on	on	IN
work_7gfl5pcgirgmxcf3hp5jw4icla	20	21	photoelectricity	photoelectricity	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	20	22	.	.	.
work_7gfl5pcgirgmxcf3hp5jw4icla	21	1	They	-PRON-	PRP
work_7gfl5pcgirgmxcf3hp5jw4icla	21	2	showed	show	VBD
work_7gfl5pcgirgmxcf3hp5jw4icla	21	3	that	that	IN
work_7gfl5pcgirgmxcf3hp5jw4icla	21	4	when	when	WRB
work_7gfl5pcgirgmxcf3hp5jw4icla	21	5	certain	certain	JJ
work_7gfl5pcgirgmxcf3hp5jw4icla	21	6	metals	metal	NNS
work_7gfl5pcgirgmxcf3hp5jw4icla	21	7	(	(	-LRB-
work_7gfl5pcgirgmxcf3hp5jw4icla	21	8	including	include	VBG
work_7gfl5pcgirgmxcf3hp5jw4icla	21	9	potas-	potas-	NNP
work_7gfl5pcgirgmxcf3hp5jw4icla	21	10	sium	sium	NNP
work_7gfl5pcgirgmxcf3hp5jw4icla	21	11	,	,	,
work_7gfl5pcgirgmxcf3hp5jw4icla	21	12	sodium	sodium	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	21	13	,	,	,
work_7gfl5pcgirgmxcf3hp5jw4icla	21	14	zinc	zinc	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	21	15	,	,	,
work_7gfl5pcgirgmxcf3hp5jw4icla	21	16	and	and	CC
work_7gfl5pcgirgmxcf3hp5jw4icla	21	17	aluminum	aluminum	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	21	18	)	)	-RRB-
work_7gfl5pcgirgmxcf3hp5jw4icla	21	19	were	be	VBD
work_7gfl5pcgirgmxcf3hp5jw4icla	21	20	amalgamated	amalgamate	VBN
work_7gfl5pcgirgmxcf3hp5jw4icla	21	21	with	with	IN
work_7gfl5pcgirgmxcf3hp5jw4icla	21	22	mercury	mercury	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	21	23	,	,	,
work_7gfl5pcgirgmxcf3hp5jw4icla	21	24	they	-PRON-	PRP
work_7gfl5pcgirgmxcf3hp5jw4icla	21	25	became	become	VBD
work_7gfl5pcgirgmxcf3hp5jw4icla	21	26	photoelectrically	photoelectrically	RB
work_7gfl5pcgirgmxcf3hp5jw4icla	21	27	sensitive	sensitive	JJ
work_7gfl5pcgirgmxcf3hp5jw4icla	21	28	not	not	RB
work_7gfl5pcgirgmxcf3hp5jw4icla	21	29	only	only	RB
work_7gfl5pcgirgmxcf3hp5jw4icla	21	30	to	to	IN
work_7gfl5pcgirgmxcf3hp5jw4icla	21	31	the	the	DT
work_7gfl5pcgirgmxcf3hp5jw4icla	21	32	ultraviolet	ultraviolet	JJ
work_7gfl5pcgirgmxcf3hp5jw4icla	21	33	light	light	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	21	34	Hertz	Hertz	NNP
work_7gfl5pcgirgmxcf3hp5jw4icla	21	35	had	have	VBD
work_7gfl5pcgirgmxcf3hp5jw4icla	21	36	used	use	VBN
work_7gfl5pcgirgmxcf3hp5jw4icla	21	37	,	,	,
work_7gfl5pcgirgmxcf3hp5jw4icla	21	38	but	but	CC
work_7gfl5pcgirgmxcf3hp5jw4icla	21	39	also	also	RB
work_7gfl5pcgirgmxcf3hp5jw4icla	21	40	to	to	IN
work_7gfl5pcgirgmxcf3hp5jw4icla	21	41	visible	visible	JJ
work_7gfl5pcgirgmxcf3hp5jw4icla	21	42	light	light	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	21	43	—	—	:
work_7gfl5pcgirgmxcf3hp5jw4icla	21	44	which	which	WDT
work_7gfl5pcgirgmxcf3hp5jw4icla	21	45	meant	mean	VBD
work_7gfl5pcgirgmxcf3hp5jw4icla	21	46	the	the	DT
work_7gfl5pcgirgmxcf3hp5jw4icla	21	47	effect	effect	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	21	48	was	be	VBD
work_7gfl5pcgirgmxcf3hp5jw4icla	21	49	caused	cause	VBN
work_7gfl5pcgirgmxcf3hp5jw4icla	21	50	by	by	IN
work_7gfl5pcgirgmxcf3hp5jw4icla	21	51	simple	simple	JJ
work_7gfl5pcgirgmxcf3hp5jw4icla	21	52	sunlight	sunlight	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	21	53	.	.	.
work_7gfl5pcgirgmxcf3hp5jw4icla	22	1	A	a	DT
work_7gfl5pcgirgmxcf3hp5jw4icla	22	2	plate	plate	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	22	3	of	of	IN
work_7gfl5pcgirgmxcf3hp5jw4icla	22	4	zinc	zinc	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	22	5	in	in	IN
work_7gfl5pcgirgmxcf3hp5jw4icla	22	6	air	air	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	22	7	at	at	IN
work_7gfl5pcgirgmxcf3hp5jw4icla	22	8	atmospheric	atmospheric	JJ
work_7gfl5pcgirgmxcf3hp5jw4icla	22	9	pressure	pressure	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	22	10	could	could	MD
work_7gfl5pcgirgmxcf3hp5jw4icla	22	11	ac-	ac-	RB
work_7gfl5pcgirgmxcf3hp5jw4icla	22	12	quire	quire	VB
work_7gfl5pcgirgmxcf3hp5jw4icla	22	13	a	a	DT
work_7gfl5pcgirgmxcf3hp5jw4icla	22	14	potential	potential	JJ
work_7gfl5pcgirgmxcf3hp5jw4icla	22	15	difference	difference	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	22	16	of	of	IN
work_7gfl5pcgirgmxcf3hp5jw4icla	22	17	up	up	IN
work_7gfl5pcgirgmxcf3hp5jw4icla	22	18	to	to	TO
work_7gfl5pcgirgmxcf3hp5jw4icla	22	19	2.5	2.5	CD
work_7gfl5pcgirgmxcf3hp5jw4icla	22	20	volts	volt	NNS
work_7gfl5pcgirgmxcf3hp5jw4icla	22	21	.	.	.
work_7gfl5pcgirgmxcf3hp5jw4icla	23	1	Elster	Elster	NNP
work_7gfl5pcgirgmxcf3hp5jw4icla	23	2	and	and	CC
work_7gfl5pcgirgmxcf3hp5jw4icla	23	3	Gertel	Gertel	NNP
work_7gfl5pcgirgmxcf3hp5jw4icla	23	4	also	also	RB
work_7gfl5pcgirgmxcf3hp5jw4icla	23	5	showed	show	VBD
work_7gfl5pcgirgmxcf3hp5jw4icla	23	6	that	that	IN
work_7gfl5pcgirgmxcf3hp5jw4icla	23	7	other	other	JJ
work_7gfl5pcgirgmxcf3hp5jw4icla	23	8	metals	metal	NNS
work_7gfl5pcgirgmxcf3hp5jw4icla	23	9	—	—	:
work_7gfl5pcgirgmxcf3hp5jw4icla	23	10	tin	tin	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	23	11	,	,	,
work_7gfl5pcgirgmxcf3hp5jw4icla	23	12	copper	copper	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	23	13	,	,	,
work_7gfl5pcgirgmxcf3hp5jw4icla	23	14	and	and	CC
work_7gfl5pcgirgmxcf3hp5jw4icla	23	15	i	i	PRP
work_7gfl5pcgirgmxcf3hp5jw4icla	23	16	r	r	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	23	17	o	o	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	23	18	n	n	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	23	19	-	-	HYPH
work_7gfl5pcgirgmxcf3hp5jw4icla	23	20	remained	remain	VBN
work_7gfl5pcgirgmxcf3hp5jw4icla	23	21	inactive	inactive	JJ
work_7gfl5pcgirgmxcf3hp5jw4icla	23	22	.	.	.
work_7gfl5pcgirgmxcf3hp5jw4icla	24	1	The	the	DT
work_7gfl5pcgirgmxcf3hp5jw4icla	24	2	following	following	JJ
work_7gfl5pcgirgmxcf3hp5jw4icla	24	3	year	year	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	24	4	they	-PRON-	PRP
work_7gfl5pcgirgmxcf3hp5jw4icla	24	5	designed	design	VBD
work_7gfl5pcgirgmxcf3hp5jw4icla	24	6	the	the	DT
work_7gfl5pcgirgmxcf3hp5jw4icla	24	7	forerunner	forerunner	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	24	8	of	of	IN
work_7gfl5pcgirgmxcf3hp5jw4icla	24	9	a	a	DT
work_7gfl5pcgirgmxcf3hp5jw4icla	24	10	modern	modern	JJ
work_7gfl5pcgirgmxcf3hp5jw4icla	24	11	photoelectric	photoelectric	JJ
work_7gfl5pcgirgmxcf3hp5jw4icla	24	12	cell	cell	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	24	13	,	,	,
work_7gfl5pcgirgmxcf3hp5jw4icla	24	14	an	an	DT
work_7gfl5pcgirgmxcf3hp5jw4icla	24	15	evacuated	evacuated	JJ
work_7gfl5pcgirgmxcf3hp5jw4icla	24	16	glass	glass	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	24	17	bulb	bulb	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	24	18	containing	contain	VBG
work_7gfl5pcgirgmxcf3hp5jw4icla	24	19	alkali	alkali	JJ
work_7gfl5pcgirgmxcf3hp5jw4icla	24	20	metals	metal	NNS
work_7gfl5pcgirgmxcf3hp5jw4icla	24	21	or	or	CC
work_7gfl5pcgirgmxcf3hp5jw4icla	24	22	their	-PRON-	PRP$
work_7gfl5pcgirgmxcf3hp5jw4icla	24	23	alloys	alloy	NNS
work_7gfl5pcgirgmxcf3hp5jw4icla	24	24	or	or	CC
work_7gfl5pcgirgmxcf3hp5jw4icla	24	25	amalgams	amalgam	NNS
work_7gfl5pcgirgmxcf3hp5jw4icla	24	26	.	.	.
work_7gfl5pcgirgmxcf3hp5jw4icla	25	1	With	with	IN
work_7gfl5pcgirgmxcf3hp5jw4icla	25	2	an	an	DT
work_7gfl5pcgirgmxcf3hp5jw4icla	25	3	external	external	JJ
work_7gfl5pcgirgmxcf3hp5jw4icla	25	4	battery	battery	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	25	5	to	to	TO
work_7gfl5pcgirgmxcf3hp5jw4icla	25	6	provide	provide	VB
work_7gfl5pcgirgmxcf3hp5jw4icla	25	7	a	a	DT
work_7gfl5pcgirgmxcf3hp5jw4icla	25	8	positive	positive	JJ
work_7gfl5pcgirgmxcf3hp5jw4icla	25	9	po-	po-	JJ
work_7gfl5pcgirgmxcf3hp5jw4icla	25	10	tential	tential	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	25	11	,	,	,
work_7gfl5pcgirgmxcf3hp5jw4icla	25	12	this	this	DT
work_7gfl5pcgirgmxcf3hp5jw4icla	25	13	cell	cell	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	25	14	produced	produce	VBD
work_7gfl5pcgirgmxcf3hp5jw4icla	25	15	an	an	DT
work_7gfl5pcgirgmxcf3hp5jw4icla	25	16	electric	electric	JJ
work_7gfl5pcgirgmxcf3hp5jw4icla	25	17	cur-	cur-	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	25	18	rent	rent	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	25	19	when	when	WRB
work_7gfl5pcgirgmxcf3hp5jw4icla	25	20	illuminated	illuminate	VBN
work_7gfl5pcgirgmxcf3hp5jw4icla	25	21	by	by	IN
work_7gfl5pcgirgmxcf3hp5jw4icla	25	22	visible	visible	JJ
work_7gfl5pcgirgmxcf3hp5jw4icla	25	23	light	light	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	25	24	.	.	.
work_7gfl5pcgirgmxcf3hp5jw4icla	26	1	In	in	IN
work_7gfl5pcgirgmxcf3hp5jw4icla	26	2	1892	1892	CD
work_7gfl5pcgirgmxcf3hp5jw4icla	26	3	,	,	,
work_7gfl5pcgirgmxcf3hp5jw4icla	26	4	they	-PRON-	PRP
work_7gfl5pcgirgmxcf3hp5jw4icla	26	5	used	use	VBD
work_7gfl5pcgirgmxcf3hp5jw4icla	26	6	a	a	DT
work_7gfl5pcgirgmxcf3hp5jw4icla	26	7	device	device	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	26	8	operating	operate	VBG
work_7gfl5pcgirgmxcf3hp5jw4icla	26	9	on	on	IN
work_7gfl5pcgirgmxcf3hp5jw4icla	26	10	the	the	DT
work_7gfl5pcgirgmxcf3hp5jw4icla	26	11	same	same	JJ
work_7gfl5pcgirgmxcf3hp5jw4icla	26	12	principle	principle	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	26	13	as	as	IN
work_7gfl5pcgirgmxcf3hp5jw4icla	26	14	the	the	DT
work_7gfl5pcgirgmxcf3hp5jw4icla	26	15	first	first	JJ
work_7gfl5pcgirgmxcf3hp5jw4icla	26	16	photoelectric	photoelectric	JJ
work_7gfl5pcgirgmxcf3hp5jw4icla	26	17	photometer	photometer	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	26	18	,	,	,
work_7gfl5pcgirgmxcf3hp5jw4icla	26	19	measuring	measure	VBG
work_7gfl5pcgirgmxcf3hp5jw4icla	26	20	ultraviolet	ultraviolet	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	26	21	radia-	radia-	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	26	22	tion	tion	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	26	23	from	from	IN
work_7gfl5pcgirgmxcf3hp5jw4icla	26	24	the	the	DT
work_7gfl5pcgirgmxcf3hp5jw4icla	26	25	sun	sun	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	26	26	.	.	.
work_7gfl5pcgirgmxcf3hp5jw4icla	27	1	By	by	IN
work_7gfl5pcgirgmxcf3hp5jw4icla	27	2	1927	1927	CD
work_7gfl5pcgirgmxcf3hp5jw4icla	27	3	a	a	DT
work_7gfl5pcgirgmxcf3hp5jw4icla	27	4	metal	metal	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	27	5	-	-	HYPH
work_7gfl5pcgirgmxcf3hp5jw4icla	27	6	semiconductor	semiconductor	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	27	7	-	-	HYPH
work_7gfl5pcgirgmxcf3hp5jw4icla	27	8	junction	junction	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	27	9	solar	solar	JJ
work_7gfl5pcgirgmxcf3hp5jw4icla	27	10	cell	cell	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	27	11	had	have	VBD
work_7gfl5pcgirgmxcf3hp5jw4icla	27	12	been	be	VBN
work_7gfl5pcgirgmxcf3hp5jw4icla	27	13	made	make	VBN
work_7gfl5pcgirgmxcf3hp5jw4icla	27	14	of	of	IN
work_7gfl5pcgirgmxcf3hp5jw4icla	27	15	copper	copper	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	27	16	and	and	CC
work_7gfl5pcgirgmxcf3hp5jw4icla	27	17	copper	copper	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	27	18	oxide	oxide	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	27	19	.	.	.
work_7gfl5pcgirgmxcf3hp5jw4icla	28	1	In	in	IN
work_7gfl5pcgirgmxcf3hp5jw4icla	28	2	1930	1930	CD
work_7gfl5pcgirgmxcf3hp5jw4icla	28	3	and	and	CC
work_7gfl5pcgirgmxcf3hp5jw4icla	28	4	1931	1931	CD
work_7gfl5pcgirgmxcf3hp5jw4icla	28	5	,	,	,
work_7gfl5pcgirgmxcf3hp5jw4icla	28	6	B.	B.	NNP
work_7gfl5pcgirgmxcf3hp5jw4icla	28	7	Lange	Lange	NNP
work_7gfl5pcgirgmxcf3hp5jw4icla	28	8	and	and	CC
work_7gfl5pcgirgmxcf3hp5jw4icla	28	9	L.	L.	NNP
work_7gfl5pcgirgmxcf3hp5jw4icla	28	10	Bergman	Bergman	NNP
work_7gfl5pcgirgmxcf3hp5jw4icla	28	11	,	,	,
work_7gfl5pcgirgmxcf3hp5jw4icla	28	12	respectively	respectively	RB
work_7gfl5pcgirgmxcf3hp5jw4icla	28	13	,	,	,
work_7gfl5pcgirgmxcf3hp5jw4icla	28	14	discovered	discover	VBD
work_7gfl5pcgirgmxcf3hp5jw4icla	28	15	the	the	DT
work_7gfl5pcgirgmxcf3hp5jw4icla	28	16	photoelectric	photoelectric	JJ
work_7gfl5pcgirgmxcf3hp5jw4icla	28	17	effect	effect	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	28	18	in	in	IN
work_7gfl5pcgirgmxcf3hp5jw4icla	28	19	selenium	selenium	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	28	20	barrier-	barrier-	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	28	21	layer	layer	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	28	22	cells	cell	NNS
work_7gfl5pcgirgmxcf3hp5jw4icla	28	23	.	.	.
work_7gfl5pcgirgmxcf3hp5jw4icla	29	1	Actually	actually	RB
work_7gfl5pcgirgmxcf3hp5jw4icla	29	2	,	,	,
work_7gfl5pcgirgmxcf3hp5jw4icla	29	3	this	this	DT
work_7gfl5pcgirgmxcf3hp5jw4icla	29	4	work	work	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	29	5	had	have	VBD
work_7gfl5pcgirgmxcf3hp5jw4icla	29	6	already	already	RB
work_7gfl5pcgirgmxcf3hp5jw4icla	29	7	been	be	VBN
work_7gfl5pcgirgmxcf3hp5jw4icla	29	8	done	do	VBN
work_7gfl5pcgirgmxcf3hp5jw4icla	29	9	in	in	IN
work_7gfl5pcgirgmxcf3hp5jw4icla	29	10	1876	1876	CD
work_7gfl5pcgirgmxcf3hp5jw4icla	29	11	by	by	IN
work_7gfl5pcgirgmxcf3hp5jw4icla	29	12	W.G.	W.G.	NNP
work_7gfl5pcgirgmxcf3hp5jw4icla	30	1	Adams	Adams	NNP
work_7gfl5pcgirgmxcf3hp5jw4icla	30	2	and	and	CC
work_7gfl5pcgirgmxcf3hp5jw4icla	30	3	R.E.	R.E.	NNP
work_7gfl5pcgirgmxcf3hp5jw4icla	31	1	Day	day	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	31	2	,	,	,
work_7gfl5pcgirgmxcf3hp5jw4icla	31	3	but	but	CC
work_7gfl5pcgirgmxcf3hp5jw4icla	31	4	went	go	VBD
work_7gfl5pcgirgmxcf3hp5jw4icla	31	5	unnoticed	unnoticed	JJ
work_7gfl5pcgirgmxcf3hp5jw4icla	31	6	.	.	.
work_7gfl5pcgirgmxcf3hp5jw4icla	32	1	In	in	IN
work_7gfl5pcgirgmxcf3hp5jw4icla	32	2	the	the	DT
work_7gfl5pcgirgmxcf3hp5jw4icla	32	3	dec-	dec-	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	32	4	ade	ade	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	32	5	of	of	IN
work_7gfl5pcgirgmxcf3hp5jw4icla	32	6	the	the	DT
work_7gfl5pcgirgmxcf3hp5jw4icla	32	7	1930s	1930	NNS
work_7gfl5pcgirgmxcf3hp5jw4icla	32	8	,	,	,
work_7gfl5pcgirgmxcf3hp5jw4icla	32	9	Lange	Lange	NNP
work_7gfl5pcgirgmxcf3hp5jw4icla	32	10	as	as	RB
work_7gfl5pcgirgmxcf3hp5jw4icla	32	11	well	well	RB
work_7gfl5pcgirgmxcf3hp5jw4icla	32	12	as	as	IN
work_7gfl5pcgirgmxcf3hp5jw4icla	32	13	L.O.	L.O.	NNP
work_7gfl5pcgirgmxcf3hp5jw4icla	33	1	Grendahl	Grendahl	NNS
work_7gfl5pcgirgmxcf3hp5jw4icla	33	2	in	in	IN
work_7gfl5pcgirgmxcf3hp5jw4icla	33	3	the	the	DT
work_7gfl5pcgirgmxcf3hp5jw4icla	33	4	United	United	NNP
work_7gfl5pcgirgmxcf3hp5jw4icla	33	5	States	States	NNP
work_7gfl5pcgirgmxcf3hp5jw4icla	33	6	and	and	CC
work_7gfl5pcgirgmxcf3hp5jw4icla	33	7	Walter	Walter	NNP
work_7gfl5pcgirgmxcf3hp5jw4icla	33	8	Schottky	Schottky	NNP
work_7gfl5pcgirgmxcf3hp5jw4icla	33	9	in	in	IN
work_7gfl5pcgirgmxcf3hp5jw4icla	33	10	Switzerland	Switzerland	NNP
work_7gfl5pcgirgmxcf3hp5jw4icla	33	11	conducted	conduct	VBD
work_7gfl5pcgirgmxcf3hp5jw4icla	33	12	de-	de-	RB
work_7gfl5pcgirgmxcf3hp5jw4icla	33	13	tailed	tailed	JJ
work_7gfl5pcgirgmxcf3hp5jw4icla	33	14	studies	study	NNS
work_7gfl5pcgirgmxcf3hp5jw4icla	33	15	of	of	IN
work_7gfl5pcgirgmxcf3hp5jw4icla	33	16	selenium	selenium	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	33	17	and	and	CC
work_7gfl5pcgirgmxcf3hp5jw4icla	33	18	cuprous	cuprous	JJ
work_7gfl5pcgirgmxcf3hp5jw4icla	33	19	ox-	ox-	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	33	20	ide	ide	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	33	21	photovoltaic	photovoltaic	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	33	22	cells	cell	NNS
work_7gfl5pcgirgmxcf3hp5jw4icla	33	23	.	.	.
work_7gfl5pcgirgmxcf3hp5jw4icla	34	1	Both	both	DT
work_7gfl5pcgirgmxcf3hp5jw4icla	34	2	types	type	NNS
work_7gfl5pcgirgmxcf3hp5jw4icla	34	3	of	of	IN
work_7gfl5pcgirgmxcf3hp5jw4icla	34	4	cells	cell	NNS
work_7gfl5pcgirgmxcf3hp5jw4icla	34	5	were	be	VBD
work_7gfl5pcgirgmxcf3hp5jw4icla	34	6	used	use	VBN
work_7gfl5pcgirgmxcf3hp5jw4icla	34	7	in	in	IN
work_7gfl5pcgirgmxcf3hp5jw4icla	34	8	light	light	JJ
work_7gfl5pcgirgmxcf3hp5jw4icla	34	9	-	-	HYPH
work_7gfl5pcgirgmxcf3hp5jw4icla	34	10	sensitive	sensitive	JJ
work_7gfl5pcgirgmxcf3hp5jw4icla	34	11	devices	device	NNS
work_7gfl5pcgirgmxcf3hp5jw4icla	34	12	,	,	,
work_7gfl5pcgirgmxcf3hp5jw4icla	34	13	al-	al-	XX
work_7gfl5pcgirgmxcf3hp5jw4icla	34	14	though	though	IN
work_7gfl5pcgirgmxcf3hp5jw4icla	34	15	their	-PRON-	PRP$
work_7gfl5pcgirgmxcf3hp5jw4icla	34	16	conversion	conversion	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	34	17	efficiencies	efficiency	NNS
work_7gfl5pcgirgmxcf3hp5jw4icla	34	18	still	still	RB
work_7gfl5pcgirgmxcf3hp5jw4icla	34	19	rarely	rarely	RB
work_7gfl5pcgirgmxcf3hp5jw4icla	34	20	exceeded	exceed	VBD
work_7gfl5pcgirgmxcf3hp5jw4icla	34	21	1	1	CD
work_7gfl5pcgirgmxcf3hp5jw4icla	34	22	%	%	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	34	23	.	.	.
work_7gfl5pcgirgmxcf3hp5jw4icla	35	1	A	a	DT
work_7gfl5pcgirgmxcf3hp5jw4icla	35	2	breakthrough	breakthrough	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	35	3	finally	finally	RB
work_7gfl5pcgirgmxcf3hp5jw4icla	35	4	occurred	occur	VBD
work_7gfl5pcgirgmxcf3hp5jw4icla	35	5	in	in	IN
work_7gfl5pcgirgmxcf3hp5jw4icla	35	6	1941	1941	CD
work_7gfl5pcgirgmxcf3hp5jw4icla	35	7	,	,	,
work_7gfl5pcgirgmxcf3hp5jw4icla	35	8	when	when	WRB
work_7gfl5pcgirgmxcf3hp5jw4icla	35	9	Russell	Russell	NNP
work_7gfl5pcgirgmxcf3hp5jw4icla	35	10	Ohl	Ohl	NNP
work_7gfl5pcgirgmxcf3hp5jw4icla	35	11	proposed	propose	VBD
work_7gfl5pcgirgmxcf3hp5jw4icla	35	12	using	use	VBG
work_7gfl5pcgirgmxcf3hp5jw4icla	35	13	silicon	silicon	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	35	14	for	for	IN
work_7gfl5pcgirgmxcf3hp5jw4icla	35	15	a	a	DT
work_7gfl5pcgirgmxcf3hp5jw4icla	35	16	photovoltaic	photovoltaic	JJ
work_7gfl5pcgirgmxcf3hp5jw4icla	35	17	cell	cell	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	35	18	.	.	.
work_7gfl5pcgirgmxcf3hp5jw4icla	36	1	Not	not	RB
work_7gfl5pcgirgmxcf3hp5jw4icla	36	2	until	until	IN
work_7gfl5pcgirgmxcf3hp5jw4icla	36	3	13	13	CD
work_7gfl5pcgirgmxcf3hp5jw4icla	36	4	years	year	NNS
work_7gfl5pcgirgmxcf3hp5jw4icla	36	5	later	later	RB
work_7gfl5pcgirgmxcf3hp5jw4icla	36	6	,	,	,
work_7gfl5pcgirgmxcf3hp5jw4icla	36	7	however	however	RB
work_7gfl5pcgirgmxcf3hp5jw4icla	36	8	,	,	,
work_7gfl5pcgirgmxcf3hp5jw4icla	36	9	did	do	VBD
work_7gfl5pcgirgmxcf3hp5jw4icla	36	10	an	an	DT
work_7gfl5pcgirgmxcf3hp5jw4icla	36	11	engineer	engineer	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	36	12	—	—	:
work_7gfl5pcgirgmxcf3hp5jw4icla	36	13	Paul	Paul	NNP
work_7gfl5pcgirgmxcf3hp5jw4icla	36	14	Rap-	Rap-	NNP
work_7gfl5pcgirgmxcf3hp5jw4icla	36	15	paport	paport	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	36	16	in	in	IN
work_7gfl5pcgirgmxcf3hp5jw4icla	36	17	America	America	NNP
work_7gfl5pcgirgmxcf3hp5jw4icla	36	18	—	—	:
work_7gfl5pcgirgmxcf3hp5jw4icla	36	19	conceive	conceive	JJ
work_7gfl5pcgirgmxcf3hp5jw4icla	36	20	of	of	IN
work_7gfl5pcgirgmxcf3hp5jw4icla	36	21	using	use	VBG
work_7gfl5pcgirgmxcf3hp5jw4icla	36	22	sili-	sili-	JJ
work_7gfl5pcgirgmxcf3hp5jw4icla	36	23	con	con	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	36	24	photovoltaic	photovoltaic	JJ
work_7gfl5pcgirgmxcf3hp5jw4icla	36	25	cells	cell	NNS
work_7gfl5pcgirgmxcf3hp5jw4icla	36	26	as	as	IN
work_7gfl5pcgirgmxcf3hp5jw4icla	36	27	relatively	relatively	RB
work_7gfl5pcgirgmxcf3hp5jw4icla	36	28	efficient	efficient	JJ
work_7gfl5pcgirgmxcf3hp5jw4icla	36	29	power	power	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	36	30	sources	source	NNS
work_7gfl5pcgirgmxcf3hp5jw4icla	36	31	.	.	.
work_7gfl5pcgirgmxcf3hp5jw4icla	37	1	Later	later	RB
work_7gfl5pcgirgmxcf3hp5jw4icla	37	2	in	in	IN
work_7gfl5pcgirgmxcf3hp5jw4icla	37	3	1954	1954	CD
work_7gfl5pcgirgmxcf3hp5jw4icla	37	4	,	,	,
work_7gfl5pcgirgmxcf3hp5jw4icla	37	5	Daryl	Daryl	NNP
work_7gfl5pcgirgmxcf3hp5jw4icla	37	6	M.	M.	NNP
work_7gfl5pcgirgmxcf3hp5jw4icla	37	7	Chapin	Chapin	NNP
work_7gfl5pcgirgmxcf3hp5jw4icla	37	8	,	,	,
work_7gfl5pcgirgmxcf3hp5jw4icla	37	9	G.L.	G.L.	NNP
work_7gfl5pcgirgmxcf3hp5jw4icla	38	1	Pearson	Pearson	NNP
work_7gfl5pcgirgmxcf3hp5jw4icla	38	2	,	,	,
work_7gfl5pcgirgmxcf3hp5jw4icla	38	3	and	and	CC
work_7gfl5pcgirgmxcf3hp5jw4icla	38	4	Calvin	Calvin	NNP
work_7gfl5pcgirgmxcf3hp5jw4icla	38	5	Fuller	Fuller	NNP
work_7gfl5pcgirgmxcf3hp5jw4icla	38	6	demonstrated	demonstrate	VBD
work_7gfl5pcgirgmxcf3hp5jw4icla	38	7	a	a	DT
work_7gfl5pcgirgmxcf3hp5jw4icla	38	8	functioning	function	VBG
work_7gfl5pcgirgmxcf3hp5jw4icla	38	9	silicon	silicon	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	38	10	solar	solar	JJ
work_7gfl5pcgirgmxcf3hp5jw4icla	38	11	cell	cell	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	38	12	capable	capable	JJ
work_7gfl5pcgirgmxcf3hp5jw4icla	38	13	of	of	IN
work_7gfl5pcgirgmxcf3hp5jw4icla	38	14	6	6	CD
work_7gfl5pcgirgmxcf3hp5jw4icla	38	15	%	%	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	38	16	energy	energy	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	38	17	conversion	conversion	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	38	18	effi-	effi-	NNP
work_7gfl5pcgirgmxcf3hp5jw4icla	38	19	ciency	ciency	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	38	20	when	when	WRB
work_7gfl5pcgirgmxcf3hp5jw4icla	38	21	used	use	VBN
work_7gfl5pcgirgmxcf3hp5jw4icla	38	22	in	in	IN
work_7gfl5pcgirgmxcf3hp5jw4icla	38	23	direct	direct	JJ
work_7gfl5pcgirgmxcf3hp5jw4icla	38	24	sunlight	sunlight	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	38	25	.	.	.
work_7gfl5pcgirgmxcf3hp5jw4icla	39	1	Silicon	Silicon	NNP
work_7gfl5pcgirgmxcf3hp5jw4icla	39	2	is	be	VBZ
work_7gfl5pcgirgmxcf3hp5jw4icla	39	3	now	now	RB
work_7gfl5pcgirgmxcf3hp5jw4icla	39	4	the	the	DT
work_7gfl5pcgirgmxcf3hp5jw4icla	39	5	most	most	RBS
work_7gfl5pcgirgmxcf3hp5jw4icla	39	6	commonly	commonly	RB
work_7gfl5pcgirgmxcf3hp5jw4icla	39	7	used	use	VBN
work_7gfl5pcgirgmxcf3hp5jw4icla	39	8	semiconductor	semiconductor	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	39	9	material	material	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	39	10	for	for	IN
work_7gfl5pcgirgmxcf3hp5jw4icla	39	11	photovoltaic	photovoltaic	NNP
work_7gfl5pcgirgmxcf3hp5jw4icla	39	12	cells	cell	NNS
work_7gfl5pcgirgmxcf3hp5jw4icla	39	13	.	.	.
work_7gfl5pcgirgmxcf3hp5jw4icla	40	1	This	this	DT
work_7gfl5pcgirgmxcf3hp5jw4icla	40	2	material	material	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	40	3	is	be	VBZ
work_7gfl5pcgirgmxcf3hp5jw4icla	40	4	useful	useful	JJ
work_7gfl5pcgirgmxcf3hp5jw4icla	40	5	at	at	IN
work_7gfl5pcgirgmxcf3hp5jw4icla	40	6	wavelengths	wavelength	NNS
work_7gfl5pcgirgmxcf3hp5jw4icla	40	7	less	less	JJR
work_7gfl5pcgirgmxcf3hp5jw4icla	40	8	than	than	IN
work_7gfl5pcgirgmxcf3hp5jw4icla	40	9	1,100	1,100	CD
work_7gfl5pcgirgmxcf3hp5jw4icla	40	10	nm	nm	UH
work_7gfl5pcgirgmxcf3hp5jw4icla	40	11	,	,	,
work_7gfl5pcgirgmxcf3hp5jw4icla	40	12	which	which	WDT
work_7gfl5pcgirgmxcf3hp5jw4icla	40	13	is	be	VBZ
work_7gfl5pcgirgmxcf3hp5jw4icla	40	14	the	the	DT
work_7gfl5pcgirgmxcf3hp5jw4icla	40	15	visible	visible	JJ
work_7gfl5pcgirgmxcf3hp5jw4icla	40	16	and	and	CC
work_7gfl5pcgirgmxcf3hp5jw4icla	40	17	near	near	JJ
work_7gfl5pcgirgmxcf3hp5jw4icla	40	18	-	-	HYPH
work_7gfl5pcgirgmxcf3hp5jw4icla	40	19	infrared	infrared	JJ
work_7gfl5pcgirgmxcf3hp5jw4icla	40	20	region	region	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	40	21	of	of	IN
work_7gfl5pcgirgmxcf3hp5jw4icla	40	22	the	the	DT
work_7gfl5pcgirgmxcf3hp5jw4icla	40	23	spectrum	spectrum	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	40	24	.	.	.
work_7gfl5pcgirgmxcf3hp5jw4icla	41	1	While	while	IN
work_7gfl5pcgirgmxcf3hp5jw4icla	41	2	selenium	selenium	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	41	3	and	and	CC
work_7gfl5pcgirgmxcf3hp5jw4icla	41	4	copper	copper	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	41	5	-	-	HYPH
work_7gfl5pcgirgmxcf3hp5jw4icla	41	6	oxide	oxide	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	41	7	photo-	photo-	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	41	8	voltaic	voltaic	NNP
work_7gfl5pcgirgmxcf3hp5jw4icla	41	9	cells	cell	NNS
work_7gfl5pcgirgmxcf3hp5jw4icla	41	10	use	use	VBP
work_7gfl5pcgirgmxcf3hp5jw4icla	41	11	a	a	DT
work_7gfl5pcgirgmxcf3hp5jw4icla	41	12	semitransparent	semitransparent	JJ
work_7gfl5pcgirgmxcf3hp5jw4icla	41	13	metallic	metallic	JJ
work_7gfl5pcgirgmxcf3hp5jw4icla	41	14	film	film	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	41	15	of	of	IN
work_7gfl5pcgirgmxcf3hp5jw4icla	41	16	gold	gold	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	41	17	or	or	CC
work_7gfl5pcgirgmxcf3hp5jw4icla	41	18	platinum	platinum	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	41	19	deposited	deposit	VBN
work_7gfl5pcgirgmxcf3hp5jw4icla	41	20	on	on	IN
work_7gfl5pcgirgmxcf3hp5jw4icla	41	21	the	the	DT
work_7gfl5pcgirgmxcf3hp5jw4icla	41	22	semiconductor	semiconductor	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	41	23	surface	surface	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	41	24	to	to	TO
work_7gfl5pcgirgmxcf3hp5jw4icla	41	25	create	create	VB
work_7gfl5pcgirgmxcf3hp5jw4icla	41	26	the	the	DT
work_7gfl5pcgirgmxcf3hp5jw4icla	41	27	neces-	neces-	NNP
work_7gfl5pcgirgmxcf3hp5jw4icla	41	28	sary	sary	JJ
work_7gfl5pcgirgmxcf3hp5jw4icla	41	29	potential	potential	JJ
work_7gfl5pcgirgmxcf3hp5jw4icla	41	30	barrier	barrier	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	41	31	,	,	,
work_7gfl5pcgirgmxcf3hp5jw4icla	41	32	silicon	silicon	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	41	33	solar	solar	JJ
work_7gfl5pcgirgmxcf3hp5jw4icla	41	34	cells	cell	NNS
work_7gfl5pcgirgmxcf3hp5jw4icla	41	35	use	use	VBP
work_7gfl5pcgirgmxcf3hp5jw4icla	41	36	the	the	DT
work_7gfl5pcgirgmxcf3hp5jw4icla	41	37	p	p	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	41	38	-	-	HYPH
work_7gfl5pcgirgmxcf3hp5jw4icla	41	39	n	n	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	41	40	junctions	junction	NNS
work_7gfl5pcgirgmxcf3hp5jw4icla	41	41	within	within	IN
work_7gfl5pcgirgmxcf3hp5jw4icla	41	42	two	two	CD
work_7gfl5pcgirgmxcf3hp5jw4icla	41	43	adjacent	adjacent	JJ
work_7gfl5pcgirgmxcf3hp5jw4icla	41	44	lay-	lay-	JJ
work_7gfl5pcgirgmxcf3hp5jw4icla	41	45	ers	er	NNS
work_7gfl5pcgirgmxcf3hp5jw4icla	41	46	of	of	IN
work_7gfl5pcgirgmxcf3hp5jw4icla	41	47	silicon	silicon	NNP
work_7gfl5pcgirgmxcf3hp5jw4icla	41	48	;	;	:
work_7gfl5pcgirgmxcf3hp5jw4icla	41	49	the	the	DT
work_7gfl5pcgirgmxcf3hp5jw4icla	41	50	layers	layer	NNS
work_7gfl5pcgirgmxcf3hp5jw4icla	41	51	of	of	IN
work_7gfl5pcgirgmxcf3hp5jw4icla	41	52	silicon	silicon	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	41	53	are	be	VBP
work_7gfl5pcgirgmxcf3hp5jw4icla	41	54	doped	dope	VBN
work_7gfl5pcgirgmxcf3hp5jw4icla	41	55	with	with	IN
work_7gfl5pcgirgmxcf3hp5jw4icla	41	56	impurities	impurity	NNS
work_7gfl5pcgirgmxcf3hp5jw4icla	41	57	of	of	IN
work_7gfl5pcgirgmxcf3hp5jw4icla	41	58	arsenic	arsenic	JJ
work_7gfl5pcgirgmxcf3hp5jw4icla	41	59	or	or	CC
work_7gfl5pcgirgmxcf3hp5jw4icla	41	60	boron	boron	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	41	61	to	to	TO
work_7gfl5pcgirgmxcf3hp5jw4icla	41	62	cre-	cre-	VB
work_7gfl5pcgirgmxcf3hp5jw4icla	41	63	ate	ate	VB
work_7gfl5pcgirgmxcf3hp5jw4icla	41	64	electrons	electron	NNS
work_7gfl5pcgirgmxcf3hp5jw4icla	41	65	and	and	CC
work_7gfl5pcgirgmxcf3hp5jw4icla	41	66	holes	hole	NNS
work_7gfl5pcgirgmxcf3hp5jw4icla	41	67	that	that	WDT
work_7gfl5pcgirgmxcf3hp5jw4icla	41	68	generate	generate	VBP
work_7gfl5pcgirgmxcf3hp5jw4icla	41	69	a	a	DT
work_7gfl5pcgirgmxcf3hp5jw4icla	41	70	po-	po-	JJ
work_7gfl5pcgirgmxcf3hp5jw4icla	41	71	tential	tential	JJ
work_7gfl5pcgirgmxcf3hp5jw4icla	41	72	difference	difference	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	41	73	.	.	.
work_7gfl5pcgirgmxcf3hp5jw4icla	42	1	Such	such	JJ
work_7gfl5pcgirgmxcf3hp5jw4icla	42	2	semiconductor	semiconductor	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	42	3	cells	cell	NNS
work_7gfl5pcgirgmxcf3hp5jw4icla	42	4	can	can	MD
work_7gfl5pcgirgmxcf3hp5jw4icla	42	5	be	be	VB
work_7gfl5pcgirgmxcf3hp5jw4icla	42	6	ex-	ex-	VBN
work_7gfl5pcgirgmxcf3hp5jw4icla	42	7	tremely	tremely	RB
work_7gfl5pcgirgmxcf3hp5jw4icla	42	8	thin	thin	JJ
work_7gfl5pcgirgmxcf3hp5jw4icla	42	9	,	,	,
work_7gfl5pcgirgmxcf3hp5jw4icla	42	10	about	about	RB
work_7gfl5pcgirgmxcf3hp5jw4icla	42	11	a	a	DT
work_7gfl5pcgirgmxcf3hp5jw4icla	42	12	millimeter	millimeter	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	42	13	or	or	CC
work_7gfl5pcgirgmxcf3hp5jw4icla	42	14	less	less	JJR
work_7gfl5pcgirgmxcf3hp5jw4icla	42	15	.	.	.
work_7gfl5pcgirgmxcf3hp5jw4icla	43	1	However	however	RB
work_7gfl5pcgirgmxcf3hp5jw4icla	43	2	,	,	,
work_7gfl5pcgirgmxcf3hp5jw4icla	43	3	the	the	DT
work_7gfl5pcgirgmxcf3hp5jw4icla	43	4	power	power	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	43	5	generated	generate	VBD
work_7gfl5pcgirgmxcf3hp5jw4icla	43	6	depends	depend	VBZ
work_7gfl5pcgirgmxcf3hp5jw4icla	43	7	on	on	IN
work_7gfl5pcgirgmxcf3hp5jw4icla	43	8	the	the	DT
work_7gfl5pcgirgmxcf3hp5jw4icla	43	9	total	total	JJ
work_7gfl5pcgirgmxcf3hp5jw4icla	43	10	surface	surface	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	43	11	area	area	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	43	12	illuminated	illuminate	VBN
work_7gfl5pcgirgmxcf3hp5jw4icla	43	13	by	by	IN
work_7gfl5pcgirgmxcf3hp5jw4icla	43	14	sunlight	sunlight	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	43	15	.	.	.
work_7gfl5pcgirgmxcf3hp5jw4icla	44	1	Current	current	JJ
work_7gfl5pcgirgmxcf3hp5jw4icla	44	2	manufacturing	manufacturing	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	44	3	tech-	tech-	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	44	4	niques	nique	NNS
work_7gfl5pcgirgmxcf3hp5jw4icla	44	5	make	make	VBP
work_7gfl5pcgirgmxcf3hp5jw4icla	44	6	silicon	silicon	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	44	7	solar	solar	JJ
work_7gfl5pcgirgmxcf3hp5jw4icla	44	8	cells	cell	NNS
work_7gfl5pcgirgmxcf3hp5jw4icla	44	9	about	about	IN
work_7gfl5pcgirgmxcf3hp5jw4icla	44	10	1	1	CD
work_7gfl5pcgirgmxcf3hp5jw4icla	44	11	cm	cm	NNS
work_7gfl5pcgirgmxcf3hp5jw4icla	44	12	wide	wide	RB
work_7gfl5pcgirgmxcf3hp5jw4icla	44	13	by	by	IN
work_7gfl5pcgirgmxcf3hp5jw4icla	44	14	2	2	CD
work_7gfl5pcgirgmxcf3hp5jw4icla	44	15	cm	cm	NNS
work_7gfl5pcgirgmxcf3hp5jw4icla	44	16	long	long	JJ
work_7gfl5pcgirgmxcf3hp5jw4icla	44	17	,	,	,
work_7gfl5pcgirgmxcf3hp5jw4icla	44	18	but	but	CC
work_7gfl5pcgirgmxcf3hp5jw4icla	44	19	power	power	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	44	20	arrays	array	NNS
work_7gfl5pcgirgmxcf3hp5jw4icla	44	21	can	can	MD
work_7gfl5pcgirgmxcf3hp5jw4icla	44	22	contain	contain	VB
work_7gfl5pcgirgmxcf3hp5jw4icla	44	23	as	as	RB
work_7gfl5pcgirgmxcf3hp5jw4icla	44	24	many	many	JJ
work_7gfl5pcgirgmxcf3hp5jw4icla	44	25	as	as	IN
work_7gfl5pcgirgmxcf3hp5jw4icla	44	26	20,000	20,000	CD
work_7gfl5pcgirgmxcf3hp5jw4icla	44	27	individual	individual	JJ
work_7gfl5pcgirgmxcf3hp5jw4icla	44	28	cells	cell	NNS
work_7gfl5pcgirgmxcf3hp5jw4icla	44	29	.	.	.
work_7gfl5pcgirgmxcf3hp5jw4icla	45	1	Until	until	IN
work_7gfl5pcgirgmxcf3hp5jw4icla	45	2	the	the	DT
work_7gfl5pcgirgmxcf3hp5jw4icla	45	3	early	early	JJ
work_7gfl5pcgirgmxcf3hp5jw4icla	45	4	1960s	1960	NNS
work_7gfl5pcgirgmxcf3hp5jw4icla	45	5	,	,	,
work_7gfl5pcgirgmxcf3hp5jw4icla	45	6	silicon	silicon	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	45	7	solar	solar	JJ
work_7gfl5pcgirgmxcf3hp5jw4icla	45	8	cells	cell	NNS
work_7gfl5pcgirgmxcf3hp5jw4icla	45	9	such	such	JJ
work_7gfl5pcgirgmxcf3hp5jw4icla	45	10	as	as	IN
work_7gfl5pcgirgmxcf3hp5jw4icla	45	11	the	the	DT
work_7gfl5pcgirgmxcf3hp5jw4icla	45	12	Bell	Bell	NNP
work_7gfl5pcgirgmxcf3hp5jw4icla	45	13	battery	battery	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	45	14	functioned	function	VBD
work_7gfl5pcgirgmxcf3hp5jw4icla	45	15	at	at	IN
work_7gfl5pcgirgmxcf3hp5jw4icla	45	16	up	up	IN
work_7gfl5pcgirgmxcf3hp5jw4icla	45	17	to	to	TO
work_7gfl5pcgirgmxcf3hp5jw4icla	45	18	12	12	CD
work_7gfl5pcgirgmxcf3hp5jw4icla	45	19	%	%	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	45	20	efficiency	efficiency	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	45	21	and	and	CC
work_7gfl5pcgirgmxcf3hp5jw4icla	45	22	could	could	MD
work_7gfl5pcgirgmxcf3hp5jw4icla	45	23	produce	produce	VB
work_7gfl5pcgirgmxcf3hp5jw4icla	45	24	a	a	DT
work_7gfl5pcgirgmxcf3hp5jw4icla	45	25	current	current	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	45	26	of	of	IN
work_7gfl5pcgirgmxcf3hp5jw4icla	45	27	about	about	RB
work_7gfl5pcgirgmxcf3hp5jw4icla	45	28	40	40	CD
work_7gfl5pcgirgmxcf3hp5jw4icla	45	29	mA	mA	NNP
work_7gfl5pcgirgmxcf3hp5jw4icla	45	30	/	/	SYM
work_7gfl5pcgirgmxcf3hp5jw4icla	45	31	cm2	cm2	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	45	32	.	.	.
work_7gfl5pcgirgmxcf3hp5jw4icla	46	1	Bell	Bell	NNP
work_7gfl5pcgirgmxcf3hp5jw4icla	46	2	solar	solar	JJ
work_7gfl5pcgirgmxcf3hp5jw4icla	46	3	batteries	battery	NNS
work_7gfl5pcgirgmxcf3hp5jw4icla	46	4	were	be	VBD
work_7gfl5pcgirgmxcf3hp5jw4icla	46	5	put	put	VBN
work_7gfl5pcgirgmxcf3hp5jw4icla	46	6	to	to	TO
work_7gfl5pcgirgmxcf3hp5jw4icla	46	7	use	use	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	46	8	as	as	IN
work_7gfl5pcgirgmxcf3hp5jw4icla	46	9	power	power	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	46	10	sources	source	NNS
work_7gfl5pcgirgmxcf3hp5jw4icla	46	11	on	on	IN
work_7gfl5pcgirgmxcf3hp5jw4icla	46	12	satel-	satel-	NNP
work_7gfl5pcgirgmxcf3hp5jw4icla	46	13	lites	lite	NNS
work_7gfl5pcgirgmxcf3hp5jw4icla	46	14	.	.	.
work_7gfl5pcgirgmxcf3hp5jw4icla	47	1	In	in	IN
work_7gfl5pcgirgmxcf3hp5jw4icla	47	2	the	the	DT
work_7gfl5pcgirgmxcf3hp5jw4icla	47	3	1970s	1970	NNS
work_7gfl5pcgirgmxcf3hp5jw4icla	47	4	,	,	,
work_7gfl5pcgirgmxcf3hp5jw4icla	47	5	a	a	DT
work_7gfl5pcgirgmxcf3hp5jw4icla	47	6	great	great	JJ
work_7gfl5pcgirgmxcf3hp5jw4icla	47	7	many	many	JJ
work_7gfl5pcgirgmxcf3hp5jw4icla	47	8	semiconduct-	semiconduct-	JJ
work_7gfl5pcgirgmxcf3hp5jw4icla	47	9	ing	ing	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	47	10	materials	material	NNS
work_7gfl5pcgirgmxcf3hp5jw4icla	47	11	were	be	VBD
work_7gfl5pcgirgmxcf3hp5jw4icla	47	12	used	use	VBN
work_7gfl5pcgirgmxcf3hp5jw4icla	47	13	in	in	IN
work_7gfl5pcgirgmxcf3hp5jw4icla	47	14	effective	effective	JJ
work_7gfl5pcgirgmxcf3hp5jw4icla	47	15	photo-	photo-	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	47	16	voltaic	voltaic	NNP
work_7gfl5pcgirgmxcf3hp5jw4icla	47	17	cells	cell	NNS
work_7gfl5pcgirgmxcf3hp5jw4icla	47	18	,	,	,
work_7gfl5pcgirgmxcf3hp5jw4icla	47	19	including	include	VBG
work_7gfl5pcgirgmxcf3hp5jw4icla	47	20	gallium	gallium	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	47	21	arsenide	arsenide	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	47	22	,	,	,
work_7gfl5pcgirgmxcf3hp5jw4icla	47	23	indium	indium	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	47	24	phosphide	phosphide	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	47	25	,	,	,
work_7gfl5pcgirgmxcf3hp5jw4icla	47	26	copper	copper	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	47	27	indium	indium	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	47	28	se-	se-	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	47	29	lenide	lenide	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	47	30	,	,	,
work_7gfl5pcgirgmxcf3hp5jw4icla	47	31	cadmium	cadmium	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	47	32	sulfide	sulfide	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	47	33	,	,	,
work_7gfl5pcgirgmxcf3hp5jw4icla	47	34	and	and	CC
work_7gfl5pcgirgmxcf3hp5jw4icla	47	35	cadmium	cadmium	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	47	36	telluride	telluride	RB
work_7gfl5pcgirgmxcf3hp5jw4icla	47	37	.	.	.
work_7gfl5pcgirgmxcf3hp5jw4icla	48	1	Efficiencies	efficiency	NNS
work_7gfl5pcgirgmxcf3hp5jw4icla	48	2	with	with	IN
work_7gfl5pcgirgmxcf3hp5jw4icla	48	3	some	some	DT
work_7gfl5pcgirgmxcf3hp5jw4icla	48	4	of	of	IN
work_7gfl5pcgirgmxcf3hp5jw4icla	48	5	these	these	DT
work_7gfl5pcgirgmxcf3hp5jw4icla	48	6	materials	material	NNS
work_7gfl5pcgirgmxcf3hp5jw4icla	48	7	reached	reach	VBD
work_7gfl5pcgirgmxcf3hp5jw4icla	48	8	20	20	CD
work_7gfl5pcgirgmxcf3hp5jw4icla	48	9	%	%	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	48	10	when	when	WRB
work_7gfl5pcgirgmxcf3hp5jw4icla	48	11	used	use	VBN
work_7gfl5pcgirgmxcf3hp5jw4icla	48	12	in	in	IN
work_7gfl5pcgirgmxcf3hp5jw4icla	48	13	direct	direct	JJ
work_7gfl5pcgirgmxcf3hp5jw4icla	48	14	sunlight	sunlight	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	48	15	.	.	.
work_7gfl5pcgirgmxcf3hp5jw4icla	49	1	In	in	IN
work_7gfl5pcgirgmxcf3hp5jw4icla	49	2	1989	1989	CD
work_7gfl5pcgirgmxcf3hp5jw4icla	49	3	a	a	DT
work_7gfl5pcgirgmxcf3hp5jw4icla	49	4	"	"	``
work_7gfl5pcgirgmxcf3hp5jw4icla	49	5	concentrator	concentrator	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	49	6	solar	solar	JJ
work_7gfl5pcgirgmxcf3hp5jw4icla	49	7	cell	cell	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	49	8	,	,	,
work_7gfl5pcgirgmxcf3hp5jw4icla	49	9	"	"	''
work_7gfl5pcgirgmxcf3hp5jw4icla	49	10	which	which	WDT
work_7gfl5pcgirgmxcf3hp5jw4icla	49	11	uses	use	VBZ
work_7gfl5pcgirgmxcf3hp5jw4icla	49	12	lenses	lense	NNS
work_7gfl5pcgirgmxcf3hp5jw4icla	49	13	to	to	TO
work_7gfl5pcgirgmxcf3hp5jw4icla	49	14	concentrate	concentrate	VB
work_7gfl5pcgirgmxcf3hp5jw4icla	49	15	sun-	sun-	JJ
work_7gfl5pcgirgmxcf3hp5jw4icla	49	16	light	light	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	49	17	onto	onto	IN
work_7gfl5pcgirgmxcf3hp5jw4icla	49	18	the	the	DT
work_7gfl5pcgirgmxcf3hp5jw4icla	49	19	cell	cell	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	49	20	surface	surface	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	49	21	,	,	,
work_7gfl5pcgirgmxcf3hp5jw4icla	49	22	reached	reach	VBD
work_7gfl5pcgirgmxcf3hp5jw4icla	49	23	an	an	DT
work_7gfl5pcgirgmxcf3hp5jw4icla	49	24	effi-	effi-	JJ
work_7gfl5pcgirgmxcf3hp5jw4icla	49	25	ciency	ciency	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	49	26	of	of	IN
work_7gfl5pcgirgmxcf3hp5jw4icla	49	27	37	37	CD
work_7gfl5pcgirgmxcf3hp5jw4icla	49	28	%	%	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	49	29	.	.	.
work_7gfl5pcgirgmxcf3hp5jw4icla	50	1	Solar	solar	JJ
work_7gfl5pcgirgmxcf3hp5jw4icla	50	2	cells	cell	NNS
work_7gfl5pcgirgmxcf3hp5jw4icla	50	3	are	be	VBP
work_7gfl5pcgirgmxcf3hp5jw4icla	50	4	now	now	RB
work_7gfl5pcgirgmxcf3hp5jw4icla	50	5	frequently	frequently	RB
work_7gfl5pcgirgmxcf3hp5jw4icla	50	6	used	use	VBN
work_7gfl5pcgirgmxcf3hp5jw4icla	50	7	in	in	IN
work_7gfl5pcgirgmxcf3hp5jw4icla	50	8	specialized	specialized	JJ
work_7gfl5pcgirgmxcf3hp5jw4icla	50	9	applications	application	NNS
work_7gfl5pcgirgmxcf3hp5jw4icla	50	10	such	such	JJ
work_7gfl5pcgirgmxcf3hp5jw4icla	50	11	as	as	IN
work_7gfl5pcgirgmxcf3hp5jw4icla	50	12	toys	toy	NNS
work_7gfl5pcgirgmxcf3hp5jw4icla	50	13	,	,	,
work_7gfl5pcgirgmxcf3hp5jw4icla	50	14	cal-	cal-	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	50	15	culators	culator	NNS
work_7gfl5pcgirgmxcf3hp5jw4icla	50	16	,	,	,
work_7gfl5pcgirgmxcf3hp5jw4icla	50	17	portable	portable	JJ
work_7gfl5pcgirgmxcf3hp5jw4icla	50	18	phones	phone	NNS
work_7gfl5pcgirgmxcf3hp5jw4icla	50	19	,	,	,
work_7gfl5pcgirgmxcf3hp5jw4icla	50	20	and	and	CC
work_7gfl5pcgirgmxcf3hp5jw4icla	50	21	radios	radio	NNS
work_7gfl5pcgirgmxcf3hp5jw4icla	50	22	,	,	,
work_7gfl5pcgirgmxcf3hp5jw4icla	50	23	where	where	WRB
work_7gfl5pcgirgmxcf3hp5jw4icla	50	24	power	power	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	50	25	needs	need	NNS
work_7gfl5pcgirgmxcf3hp5jw4icla	50	26	are	be	VBP
work_7gfl5pcgirgmxcf3hp5jw4icla	50	27	usually	usually	RB
work_7gfl5pcgirgmxcf3hp5jw4icla	50	28	less	less	JJR
work_7gfl5pcgirgmxcf3hp5jw4icla	50	29	than	than	IN
work_7gfl5pcgirgmxcf3hp5jw4icla	50	30	a	a	DT
work_7gfl5pcgirgmxcf3hp5jw4icla	50	31	kilowatt	kilowatt	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	50	32	.	.	.
work_7gfl5pcgirgmxcf3hp5jw4icla	51	1	Widespread	widespread	JJ
work_7gfl5pcgirgmxcf3hp5jw4icla	51	2	application	application	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	51	3	of	of	IN
work_7gfl5pcgirgmxcf3hp5jw4icla	51	4	solar	solar	JJ
work_7gfl5pcgirgmxcf3hp5jw4icla	51	5	cells	cell	NNS
work_7gfl5pcgirgmxcf3hp5jw4icla	51	6	has	have	VBZ
work_7gfl5pcgirgmxcf3hp5jw4icla	51	7	been	be	VBN
work_7gfl5pcgirgmxcf3hp5jw4icla	51	8	hindered	hinder	VBN
work_7gfl5pcgirgmxcf3hp5jw4icla	51	9	by	by	IN
work_7gfl5pcgirgmxcf3hp5jw4icla	51	10	their	-PRON-	PRP$
work_7gfl5pcgirgmxcf3hp5jw4icla	51	11	cost	cost	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	51	12	—	—	:
work_7gfl5pcgirgmxcf3hp5jw4icla	51	13	solar	solar	JJ
work_7gfl5pcgirgmxcf3hp5jw4icla	51	14	electricity	electricity	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	51	15	still	still	RB
work_7gfl5pcgirgmxcf3hp5jw4icla	51	16	costs	cost	VBZ
work_7gfl5pcgirgmxcf3hp5jw4icla	51	17	about	about	RB
work_7gfl5pcgirgmxcf3hp5jw4icla	51	18	100	100	CD
work_7gfl5pcgirgmxcf3hp5jw4icla	51	19	to	to	TO
work_7gfl5pcgirgmxcf3hp5jw4icla	51	20	1,000	1,000	CD
work_7gfl5pcgirgmxcf3hp5jw4icla	51	21	times	time	NNS
work_7gfl5pcgirgmxcf3hp5jw4icla	51	22	as	as	RB
work_7gfl5pcgirgmxcf3hp5jw4icla	51	23	much	much	RB
work_7gfl5pcgirgmxcf3hp5jw4icla	51	24	as	as	IN
work_7gfl5pcgirgmxcf3hp5jw4icla	51	25	conventionally	conventionally	RB
work_7gfl5pcgirgmxcf3hp5jw4icla	51	26	generated	generate	VBN
work_7gfl5pcgirgmxcf3hp5jw4icla	51	27	elec-	elec-	NNP
work_7gfl5pcgirgmxcf3hp5jw4icla	51	28	tricity	tricity	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	51	29	.	.	.
work_7gfl5pcgirgmxcf3hp5jw4icla	52	1	And	and	CC
work_7gfl5pcgirgmxcf3hp5jw4icla	52	2	because	because	IN
work_7gfl5pcgirgmxcf3hp5jw4icla	52	3	their	-PRON-	PRP$
work_7gfl5pcgirgmxcf3hp5jw4icla	52	4	peak	peak	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	52	5	efficiencies	efficiency	NNS
work_7gfl5pcgirgmxcf3hp5jw4icla	52	6	are	be	VBP
work_7gfl5pcgirgmxcf3hp5jw4icla	52	7	possible	possible	JJ
work_7gfl5pcgirgmxcf3hp5jw4icla	52	8	only	only	RB
work_7gfl5pcgirgmxcf3hp5jw4icla	52	9	during	during	IN
work_7gfl5pcgirgmxcf3hp5jw4icla	52	10	days	day	NNS
work_7gfl5pcgirgmxcf3hp5jw4icla	52	11	of	of	IN
work_7gfl5pcgirgmxcf3hp5jw4icla	52	12	total	total	JJ
work_7gfl5pcgirgmxcf3hp5jw4icla	52	13	sun-	sun-	JJ
work_7gfl5pcgirgmxcf3hp5jw4icla	52	14	light	light	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	52	15	,	,	,
work_7gfl5pcgirgmxcf3hp5jw4icla	52	16	solar	solar	JJ
work_7gfl5pcgirgmxcf3hp5jw4icla	52	17	cells	cell	NNS
work_7gfl5pcgirgmxcf3hp5jw4icla	52	18	are	be	VBP
work_7gfl5pcgirgmxcf3hp5jw4icla	52	19	impractical	impractical	JJ
work_7gfl5pcgirgmxcf3hp5jw4icla	52	20	in	in	IN
work_7gfl5pcgirgmxcf3hp5jw4icla	52	21	cloudy	cloudy	JJ
work_7gfl5pcgirgmxcf3hp5jw4icla	52	22	climates	climate	NNS
work_7gfl5pcgirgmxcf3hp5jw4icla	52	23	.	.	.
work_7gfl5pcgirgmxcf3hp5jw4icla	53	1	New	new	JJ
work_7gfl5pcgirgmxcf3hp5jw4icla	53	2	materials	material	NNS
work_7gfl5pcgirgmxcf3hp5jw4icla	53	3	,	,	,
work_7gfl5pcgirgmxcf3hp5jw4icla	53	4	improved	improve	VBN
work_7gfl5pcgirgmxcf3hp5jw4icla	53	5	fabrica-	fabrica-	JJ
work_7gfl5pcgirgmxcf3hp5jw4icla	53	6	tion	tion	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	53	7	techniques	technique	NNS
work_7gfl5pcgirgmxcf3hp5jw4icla	53	8	,	,	,
work_7gfl5pcgirgmxcf3hp5jw4icla	53	9	and	and	CC
work_7gfl5pcgirgmxcf3hp5jw4icla	53	10	more	more	RBR
work_7gfl5pcgirgmxcf3hp5jw4icla	53	11	efficient	efficient	JJ
work_7gfl5pcgirgmxcf3hp5jw4icla	53	12	solar	solar	JJ
work_7gfl5pcgirgmxcf3hp5jw4icla	53	13	cell	cell	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	53	14	designs	design	NNS
work_7gfl5pcgirgmxcf3hp5jw4icla	53	15	,	,	,
work_7gfl5pcgirgmxcf3hp5jw4icla	53	16	however	however	RB
work_7gfl5pcgirgmxcf3hp5jw4icla	53	17	,	,	,
work_7gfl5pcgirgmxcf3hp5jw4icla	53	18	are	be	VBP
work_7gfl5pcgirgmxcf3hp5jw4icla	53	19	bringing	bring	VBG
work_7gfl5pcgirgmxcf3hp5jw4icla	53	20	the	the	DT
work_7gfl5pcgirgmxcf3hp5jw4icla	53	21	cost	cost	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	53	22	down	down	RP
work_7gfl5pcgirgmxcf3hp5jw4icla	53	23	and	and	CC
work_7gfl5pcgirgmxcf3hp5jw4icla	53	24	making	make	VBG
work_7gfl5pcgirgmxcf3hp5jw4icla	53	25	solar	solar	JJ
work_7gfl5pcgirgmxcf3hp5jw4icla	53	26	cells	cell	NNS
work_7gfl5pcgirgmxcf3hp5jw4icla	53	27	more	more	RBR
work_7gfl5pcgirgmxcf3hp5jw4icla	53	28	feasible	feasible	JJ
work_7gfl5pcgirgmxcf3hp5jw4icla	53	29	.	.	.
work_7gfl5pcgirgmxcf3hp5jw4icla	54	1	Kevin	Kevin	NNP
work_7gfl5pcgirgmxcf3hp5jw4icla	54	2	J.	J.	NNP
work_7gfl5pcgirgmxcf3hp5jw4icla	54	3	Anderson	Anderson	NNP
work_7gfl5pcgirgmxcf3hp5jw4icla	54	4	MRS	MRS	NNP
work_7gfl5pcgirgmxcf3hp5jw4icla	54	5	BULLETIN	BULLETIN	NNP
work_7gfl5pcgirgmxcf3hp5jw4icla	54	6	/	/	SYM
work_7gfl5pcgirgmxcf3hp5jw4icla	54	7	JUNE	JUNE	NNP
work_7gfl5pcgirgmxcf3hp5jw4icla	54	8	1992	1992	CD
work_7gfl5pcgirgmxcf3hp5jw4icla	54	9	67	67	CD
work_7gfl5pcgirgmxcf3hp5jw4icla	54	10	https://www.cambridge.org/core/terms	https://www.cambridge.org/core/term	NNS
work_7gfl5pcgirgmxcf3hp5jw4icla	54	11	.	.	.
work_7gfl5pcgirgmxcf3hp5jw4icla	55	1	https://doi.org/10.1557/S0883769400041531	https://doi.org/10.1557/s0883769400041531	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	55	2	Downloaded	download	VBN
work_7gfl5pcgirgmxcf3hp5jw4icla	55	3	from	from	IN
work_7gfl5pcgirgmxcf3hp5jw4icla	55	4	https://www.cambridge.org/core	https://www.cambridge.org/core	ADD
work_7gfl5pcgirgmxcf3hp5jw4icla	55	5	.	.	.
work_7gfl5pcgirgmxcf3hp5jw4icla	56	1	Carnegie	Carnegie	NNP
work_7gfl5pcgirgmxcf3hp5jw4icla	56	2	Mellon	Mellon	NNP
work_7gfl5pcgirgmxcf3hp5jw4icla	56	3	University	University	NNP
work_7gfl5pcgirgmxcf3hp5jw4icla	56	4	,	,	,
work_7gfl5pcgirgmxcf3hp5jw4icla	56	5	on	on	IN
work_7gfl5pcgirgmxcf3hp5jw4icla	56	6	06	06	CD
work_7gfl5pcgirgmxcf3hp5jw4icla	56	7	Apr	Apr	NNP
work_7gfl5pcgirgmxcf3hp5jw4icla	56	8	2021	2021	CD
work_7gfl5pcgirgmxcf3hp5jw4icla	56	9	at	at	IN
work_7gfl5pcgirgmxcf3hp5jw4icla	56	10	01:14:27	01:14:27	CD
work_7gfl5pcgirgmxcf3hp5jw4icla	56	11	,	,	,
work_7gfl5pcgirgmxcf3hp5jw4icla	56	12	subject	subject	JJ
work_7gfl5pcgirgmxcf3hp5jw4icla	56	13	to	to	IN
work_7gfl5pcgirgmxcf3hp5jw4icla	56	14	the	the	DT
work_7gfl5pcgirgmxcf3hp5jw4icla	56	15	Cambridge	Cambridge	NNP
work_7gfl5pcgirgmxcf3hp5jw4icla	56	16	Core	Core	NNP
work_7gfl5pcgirgmxcf3hp5jw4icla	56	17	terms	term	NNS
work_7gfl5pcgirgmxcf3hp5jw4icla	56	18	of	of	IN
work_7gfl5pcgirgmxcf3hp5jw4icla	56	19	use	use	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	56	20	,	,	,
work_7gfl5pcgirgmxcf3hp5jw4icla	56	21	available	available	JJ
work_7gfl5pcgirgmxcf3hp5jw4icla	56	22	at	at	IN
work_7gfl5pcgirgmxcf3hp5jw4icla	56	23	https://www.cambridge.org/core/terms	https://www.cambridge.org/core/term	NNS
work_7gfl5pcgirgmxcf3hp5jw4icla	56	24	https://doi.org/10.1557/S0883769400041531	https://doi.org/10.1557/s0883769400041531	NN
work_7gfl5pcgirgmxcf3hp5jw4icla	56	25	https://www.cambridge.org/core	https://www.cambridge.org/core	ADD