@book{NLE:2001,
	title = {Natural Langage Engineering, Special Issue on Question Answering},
	editor = {Lynette Hirschman and Robert Gaizauskas},
	number = {4},
	volume = {7},
	year = {2001},
	biburl = {http://www.bibsonomy.org/bibtex/2ef2173ed480320debeba82d14a00e7a5/diego_ma},
	keywords = {NLP }
}