Semantic Specificity in Spoken Dialogue Requests Ben Hixon author Rebecca J Passonneau author Susan L Epstein author 2012-07 text Proceedings of the 13th Annual Meeting of the Special Interest Group on Discourse and Dialogue Gary Geunbae Lee editor Jonathan Ginzburg editor Claire Gardent editor Amanda Stent editor Association for Computational Linguistics Seoul, South Korea conference publication hixon-etal-2012-semantic https://aclanthology.org/W12-1635/ 2012-07 257 260