BE Is Not the Unique Homomorphism That Makes the Partee Triangle Commute Junri Shimada author 2017-07 text Proceedings of the 15th Meeting on the Mathematics of Language Makoto Kanazawa editor Philippe de Groote editor Mehrnoosh Sadrzadeh editor Association for Computational Linguistics London, UK conference publication shimada-2017-unique 10.18653/v1/W17-3401 https://aclanthology.org/W17-3401/ 2017-07 1 10