Why We Speak Rohit Parikh 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 parikh-2017-speak 10.18653/v1/W17-3407 https://aclanthology.org/W17-3407/ 2017-07 68 74