The Delphi Natural Language Understanding System Madeleine Bates author Robert Bobrow author Robert Ingria author David Stallard author 1994-10 text Fourth Conference on Applied Natural Language Processing Association for Computational Linguistics Stuttgart, Germany conference publication bates-etal-1994-delphi 10.3115/974358.974388 https://aclanthology.org/A94-1022/ 1994-10 132 137