Sameer Pradhan Valerie Krugler Steven Bethard Wayne Ward Daniel Jurafsky James H. Martin Sasha Blair-Goldensohn Andrew Hazen Schlaikjer Elena Filatova Pablo Ariel Duboué Hong Yu Rebecca J. Passonneau Vasileios Hatzivassiloglou Kathleen McKeown Gabriel Illouz Building a Foundation System for Producing Short Answers to Factual Questions. 2002 TREC http://trec.nist.gov/pubs/trec11/papers/ucolorado.pradhan.pdf db/conf/trec/trec2002.html#PradhanKBWJMBSFDYPHMI02