A Logical Semantics for Nonmonotonic Sorts Mark A Young author Bill Rounds author 1993-06 text 31st Annual Meeting of the Association for Computational Linguistics Association for Computational Linguistics Columbus, Ohio, USA conference publication young-rounds-1993-logical 10.3115/981574.981602 https://aclanthology.org/P93-1028/ 1993-06 209 215