Proceedings of the BioNLP Shared Task 2013 Workshop Claire Nédellec editor Robert Bossy editor Jin-Dong Kim editor Jung-jae Kim editor Tomoko Ohta editor Sampo Pyysalo editor Pierre Zweigenbaum editor 2013-08 Association for Computational Linguistics Sofia, Bulgaria text conference publication ws-2013-bionlp https://aclanthology.org/W13-2000/