@InProceedings{takabatake-EtAl:2015:EVENTS,
  author    = {Takabatake, Yu  and  Morita, Hajime  and  Kawahara, Daisuke  and  Kurohashi, Sadao  and  Higashinaka, Ryuichiro  and  Matsuo, Yoshihiro},
  title     = {Classification and Acquisition of Contradictory Event Pairs using Crowdsourcing},
  booktitle = {Proceedings of the The 3rd Workshop on EVENTS: Definition, Detection, Coreference, and Representation},
  month     = {June},
  year      = {2015},
  address   = {Denver, Colorado},
  publisher = {Association for Computational Linguistics},
  pages     = {99--107},
  url       = {http://www.aclweb.org/anthology/W15-0813}
}