Proceedings of the Fourth Workshop on Computational Models of Reference, Anaphora and Coreference Maciej Ogrodniczuk editor Sameer Pradhan editor Massimo Poesio editor Yulia Grishina editor Vincent Ng editor 2021-11 Association for Computational Linguistics Punta Cana, Dominican Republic text conference publication crac-2021-models https://aclanthology.org/2021.crac-1.0/