IsoQuest Inc.: Description of the NetOwl™ Extractor System as Used for MUC-7 George R Krupka author Kevin Hausman author 1998 text Seventh Message Understanding Conference (MUC-7): Proceedings of a Conference Held in Fairfax, Virginia, April 29 - May 1, 1998 conference publication krupka-hausman-1998-isoquest https://aclanthology.org/M98-1015/ 1998