Unsupervised Learning of Narrative Event Chains Nathanael Chambers author Dan Jurafsky author 2008-06 text Proceedings of ACL-08: HLT Johanna D Moore editor Simone Teufel editor James Allan editor Sadaoki Furui editor Association for Computational Linguistics Columbus, Ohio conference publication chambers-jurafsky-2008-unsupervised https://aclanthology.org/P08-1090/ 2008-06 789 797