The HOOKAH Information Extraction System Chris Barclay author Sean Boisen author Clinton Hyde author Ralph Weischedel author 1996-05 text TIPSTER TEXT PROGRAM PHASE II: Proceedings of a Workshop held at Vienna, Virginia, May 6-8, 1996 Association for Computational Linguistics Vienna, Virginia, USA conference publication barclay-etal-1996-hookah 10.3115/1119018.1119040 https://aclanthology.org/X96-1019/ 1996-05 79 82