Building Effective Question Answering Characters Anton Leuski author Ronakkumar Patel author David Traum author Brandon Kennedy author 2006-07 text Proceedings of the 7th SIGdial Workshop on Discourse and Dialogue Jan Alexandersson editor Alistair Knott editor Association for Computational Linguistics Sydney, Australia conference publication leuski-etal-2006-building https://aclanthology.org/W06-1303/ 2006-07 18 27