Definition Extraction using Linguistic and Structural Features Eline Westerhout author 2009-09 text Proceedings of the 1st Workshop on Definition Extraction Gerardo Sierra editor Mara Pozzi editor Juan-Manuel Torres editor Association for Computational Linguistics Borovets, Bulgaria conference publication westerhout-2009-definition https://aclanthology.org/W09-4410/ 2009-09 61 67