An Underspecified Segmented Discourse Representation Theory (USDRT) Frank Schilder 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 schilder-1998-underspecified-segmented 10.3115/980691.980763 https://aclanthology.org/P98-2194/ 1998-08 1188 1192