Michele Banko Michael J. Cafarella Stephen Soderland Matthew Broadhead Oren Etzioni Open Information Extraction from the Web. 2670-2676 2007 conf/ijcai/2007 IJCAI http://dli.iiit.ac.in/ijcai/IJCAI-2007/PDF/IJCAI07-429.pdf db/conf/ijcai/ijcai2007.html#BankoCSBE07