Mention Detection: Heuristics for the OntoNotes annotations Jonathan K Kummerfeld author Mohit Bansal author David Burkett author Dan Klein author 2011-06 text Proceedings of the Fifteenth Conference on Computational Natural Language Learning: Shared Task Sameer Pradhan editor Association for Computational Linguistics Portland, Oregon, USA conference publication kummerfeld-etal-2011-mention https://aclanthology.org/W11-1916/ 2011-06 102 106