When Did that Happen? — Linking Events and Relations to Timestamps Dirk Hovy author James Fan author Alfio Gliozzo author Siddharth Patwardhan author Christopher Welty author 2012-04 text Proceedings of the 13th Conference of the European Chapter of the Association for Computational Linguistics Walter Daelemans editor Association for Computational Linguistics Avignon, France conference publication hovy-etal-2012-happen https://aclanthology.org/E12-1019/ 2012-04 185 193