“A Spousal Relation Begins with a Deletion of engage and Ends with an Addition of divorce”: Learning State Changing Verbs from Wikipedia Revision History Derry Tanti Wijaya author Ndapandula Nakashole author Tom Mitchell author 2015-09 text Proceedings of the 2015 Conference on Empirical Methods in Natural Language Processing Lluís Màrquez editor Chris Callison-Burch editor Jian Su editor Association for Computational Linguistics Lisbon, Portugal conference publication wijaya-etal-2015-spousal 10.18653/v1/D15-1059 https://aclanthology.org/D15-1059/ 2015-09 518 523