Why Question Answering using Sentiment Analysis and Word Classes Jong-Hoon Oh author Kentaro Torisawa author Chikara Hashimoto author Takuya Kawada author Stijn De Saeger author Jun’ichi Kazama author Yiou Wang author 2012-07 text Proceedings of the 2012 Joint Conference on Empirical Methods in Natural Language Processing and Computational Natural Language Learning Jun’ichi Tsujii editor James Henderson editor Marius Paşca editor Association for Computational Linguistics Jeju Island, Korea conference publication oh-etal-2012-question https://aclanthology.org/D12-1034/ 2012-07 368 378