Two Constraints on Speech Act Ambiguity Elizabeth A Hinkelman author James F Allen author 1989-06 text 27th Annual Meeting of the Association for Computational Linguistics Association for Computational Linguistics Vancouver, British Columbia, Canada conference publication hinkelman-allen-1989-two 10.3115/981623.981649 https://aclanthology.org/P89-1026/ 1989-06 212 219