@InProceedings{verhagen-EtAl:2007:SemEval-2007,
  author    = {Verhagen, Marc  and  Gaizauskas, Robert  and  Schilder, Frank  and  Hepple, Mark  and  Katz, Graham  and  Pustejovsky, James},
  title     = {SemEval-2007 Task 15: TempEval Temporal Relation Identification},
  booktitle = {Proceedings of the Fourth International Workshop on Semantic Evaluations (SemEval-2007)},
  month     = {June},
  year      = {2007},
  address   = {Prague, Czech Republic},
  publisher = {Association for Computational Linguistics},
  pages     = {75--80},
  url       = {http://www.aclweb.org/anthology/W/W07/W07-2014}
}