Unsupervised Semantic Parsing Hoifung Poon author Pedro Domingos author 2009-08 text Proceedings of the 2009 Conference on Empirical Methods in Natural Language Processing Philipp Koehn editor Rada Mihalcea editor Association for Computational Linguistics Singapore conference publication poon-domingos-2009-unsupervised https://aclanthology.org/D09-1001/ 2009-08 1 10