GE NLToolset: Description of the System as Used for MUC-4 George Krupka author Paul Jacobs author Lisa Rau author Lois Childs author Ira Sider author 1992 text Fourth Message Understanding Conference (MUC-4): Proceedings of a Conference Held in McLean, Virginia, June 16-18, 1992 conference publication krupka-etal-1992-ge https://aclanthology.org/M92-1025/ 1992