Description and Evaluation of a Pattern Based Approach for Definition Extraction Rodrigo Alarcón author Gerardo Sierra author Carme Bach 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 alarcon-etal-2009-description https://aclanthology.org/W09-4402/ 2009-09 7 13