LFG System in Prolog Hideki Yasukawa author 1984-07 text 10th International Conference on Computational Linguistics and 22nd Annual Meeting of the Association for Computational Linguistics Association for Computational Linguistics Stanford, California, USA conference publication yasukawa-1984-lfg 10.3115/980491.980565 https://aclanthology.org/P84-1074/ 1984-07 358 361