Generating Precondition Expressions in Instructional Text Keith Vander Linden author 1994-06 text 32nd Annual Meeting of the Association for Computational Linguistics Association for Computational Linguistics Las Cruces, New Mexico, USA conference publication vander-linden-1994-generating 10.3115/981732.981739 https://aclanthology.org/P94-1007/ 1994-06 42 49