The Message Understanding Conferences Beth M Sundheim author 1993-09 text TIPSTER TEXT PROGRAM: PHASE I: Proceedings of a Workshop held at Fredricksburg, Virginia, September 19-23, 1993 Association for Computational Linguistics Fredericksburg, Virginia, USA conference publication sundheim-1993-message 10.3115/1119149.1119153 https://aclanthology.org/X93-1003/ 1993-09 5 5