“Natural Language Texts Are Not Necessarily Grammatical and Unambiguous or Even Complete.” Lance A Miller author 1982-06 text 20th Annual Meeting of the Association for Computational Linguistics Association for Computational Linguistics Toronto, Ontario, Canada conference publication miller-1982-natural 10.3115/981251.981297 https://aclanthology.org/P82-1038/ 1982-06 167 168