Extracting Synonyms from Dictionary Definitions Tong Wang author Graeme Hirst author 2009-09 text Proceedings of the International Conference RANLP-2009 Galia Angelova editor Ruslan Mitkov editor Association for Computational Linguistics Borovets, Bulgaria conference publication wang-hirst-2009-extracting https://aclanthology.org/R09-1084/ 2009-09 471 477