Appendix F: MUC-7 Coreference Task Definition (version 3.0) Lynette Hirschman author Nancy Chinchor author 1998 text Seventh Message Understanding Conference (MUC-7): Proceedings of a Conference Held in Fairfax, Virginia, April 29 - May 1, 1998 conference publication hirschman-chinchor-1998-appendix https://aclanthology.org/M98-1029/ 1998