Events are Not Simple: Identity, Non-Identity, and Quasi-Identity - Hovy, E.; Mitamura, T.; Verdejo, F.; Araki, J.; Philpot, A. (1st Workshop on Events: Definition, Detection, Coreference, and Representation, EVENTS 2013 at the 2013 Conference of the North American Chapter of the Association for Computational Linguistics: Human Language Technologies, NAACL-HLT 2013 - Proceedings of the Conference, 2013)