UNISYS:MUC-3 Test Results and Analysis Carl Weir author Robin McEntire author Barry Silk author Tim Finin author 1991 text Third Message Understanding Conference (MUC-3): Proceedings of a Conference Held in San Diego, California, May 21-23, 1991 conference publication weir-etal-1991-unisys https://aclanthology.org/M91-1017/ 1991