Question Classification using Head Words and their Hypernyms Zhiheng Huang author Marcus Thint author Zengchang Qin author 2008-10 text Proceedings of the 2008 Conference on Empirical Methods in Natural Language Processing Mirella Lapata editor Hwee Tou Ng editor Association for Computational Linguistics Honolulu, Hawaii conference publication huang-etal-2008-question https://aclanthology.org/D08-1097/ 2008-10 927 936