@inproceedings{RKLNPRYAM01, author = {D. Roth and G. Kao and X. Li and R. Nagarajan and V. Punyakanok and N. Rizzolo and W. Yih and C. Alm and L. G. Moran}, title = {Learning Components for a Question Answering System}, booktitle = {TREC}, pages = {539-548}, year = {2001}, url = "http://cogcomp.org/papers/trec01.pdf", }