Deep Dependencies from Context-Free Statistical Parsers: Correcting the Surface Dependency Approximation Roger Levy author Christopher Manning author 2004-07 text Proceedings of the 42nd Annual Meeting of the Association for Computational Linguistics (ACL-04) Barcelona, Spain conference publication levy-manning-2004-deep 10.3115/1218955.1218997 https://aclanthology.org/P04-1042/ 2004-07 327 334