Doug Downey Matthew Broadhead Oren Etzioni Locating Complex Named Entities in Web Text. 2733-2739 2007 conf/ijcai/2007 IJCAI http://dli.iiit.ac.in/ijcai/IJCAI-2007/PDF/IJCAI07-439.pdf db/conf/ijcai/ijcai2007.html#DowneyBE07