Relation detection between named entities: report of a shared task Cláudia Freitas author Diana Santos author Cristina Mota author Hugo Gonçalo Oliveira author Paula Carvalho author 2009-06 text Proceedings of the Workshop on Semantic Evaluations: Recent Achievements and Future Directions (SEW-2009) Eneko Agirre editor Lluís Màrquez editor Richard Wicentowski editor Association for Computational Linguistics Boulder, Colorado conference publication freitas-etal-2009-relation https://aclanthology.org/W09-2421/ 2009-06 129 137