id	author	title	date	pages	extension	mime	words	sentence	flesch	summary	cache	txt
crln-8663	Pattillo, Gary	Fast Facts	2011-11-01	1	.pdf	application/pdf	553	23	52	That is, roughly 50 percent of English language usage consists of 100 words. The top 100 lemmas (the base form of a word) account for 50 percent of modern English language usage.	cache/crln-8663.pdf	txt/crln-8663.txt