\bibitem{Keselj2001}
Vlado Keselj.
\newblock Question Answering using Unification-based Grammar.
\newblock In {\em Advances in Artificial Intelligence, AI 2001\/.}
Vol.~LNAI 2056 of {\it Lecture Notes in Computer Science, Springer},
Ottawa, Canada, June 2001, pp.~297--306.