Not a Simple Yes or No: Uncertainty in Indirect Answers Marie-Catherine de Marneffe author Scott Grimm author Christopher Potts author 2009-09 text Proceedings of the SIGDIAL 2009 Conference Patrick Healey editor Roberto Pieraccini editor Donna Byron editor Steve Young editor Matthew Purver editor Association for Computational Linguistics London, UK conference publication de-marneffe-etal-2009-simple https://aclanthology.org/W09-3920/ 2009-09 136 143