... Proceedings of ACL-08: HLT, pages 1039–1047,Columbus, Ohio, USA, June 2008.c2008 Association for Computational LinguisticsFinding Contradictions in Text Marie-Catherine de Marneffe,Linguistics ... consisting of a mappingfrom each node in the hypothesis to a unique node in the text or to null. The scoring measure usesnode similarity (irrespective of polarity) and struc-tural information ... highlight-ing the difficulty in generalizing from a small corpus of positive contradiction examples, as well as under-lining the complexity of building a broad coveragesystem. This drop in accuracy...