Solving Hard Coreference Problems Haoruo Peng author Daniel Khashabi author Dan Roth author 2015-may–jun text Proceedings of the 2015 Conference of the North American Chapter of the Association for Computational Linguistics: Human Language Technologies Rada Mihalcea editor Joyce Chai editor Anoop Sarkar editor Association for Computational Linguistics Denver, Colorado conference publication peng-etal-2015-solving 10.3115/v1/N15-1082 https://aclanthology.org/N15-1082/ 2015-may–jun 809 819