An Empirical Study on Thematic Knowledge Acquisition Based on Syntactic Clues and Heuristics Rey-Long Liu author Von-wun Soo author 1993-06 text 31st Annual Meeting of the Association for Computational Linguistics Association for Computational Linguistics Columbus, Ohio, USA conference publication liu-soo-1993-empirical 10.3115/981574.981607 https://aclanthology.org/P93-1033/ 1993-06 243 250