A Test Environment for Natural Language Understanding Systems Li Li author Deborah A Dahl author Lewis M Norton author Marcia C Linebarger author Dongdong Chen author 1998-08 text 36th Annual Meeting of the Association for Computational Linguistics and 17th International Conference on Computational Linguistics, Volume 2 Association for Computational Linguistics Montreal, Quebec, Canada conference publication li-etal-1998-test-environment 10.3115/980691.980695 https://aclanthology.org/P98-2126/ 1998-08 763 767