SRI International FASTUS System MUC-4 Test Results and Analysis Douglas E Appelt author John Bear author Jerry R Hobbs author David Israel author Mabry Tyson author 1992 text Fourth Message Understanding Conference (MUC-4): Proceedings of a Conference Held in McLean, Virginia, June 16-18, 1992 conference publication appelt-etal-1992-sri https://aclanthology.org/M92-1019/ 1992