Finding Contradictions in Text Marie-Catherine de Marneffe author Anna N Rafferty author Christopher D Manning author 2008-06 text Proceedings of ACL-08: HLT Johanna D Moore editor Simone Teufel editor James Allan editor Sadaoki Furui editor Association for Computational Linguistics Columbus, Ohio conference publication de-marneffe-etal-2008-finding https://aclanthology.org/P08-1118/ 2008-06 1039 1047