MPQA 3.0: An Entity/Event-Level Sentiment Corpus Lingjia Deng author Janyce Wiebe 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 deng-wiebe-2015-mpqa 10.3115/v1/N15-1146 https://aclanthology.org/N15-1146/ 2015-may–jun 1323 1328