Towards Semantic Modeling of Contradictions and Disagreements: A Case Study of Medical Guidelines Wlodek Zadrozny author Hossein Hematialam author Luciana Garbayo author 2017 text Proceedings of the 12th International Conference on Computational Semantics (IWCS) — Short papers Claire Gardent editor Christian Retoré editor conference publication zadrozny-etal-2017-towards https://aclanthology.org/W17-6943/ 2017