Extracting Paraphrases from a Parallel Corpus Regina Barzilay author Kathleen R McKeown author 2001-07 text Proceedings of the 39th Annual Meeting of the Association for Computational Linguistics Association for Computational Linguistics Toulouse, France conference publication barzilay-mckeown-2001-extracting 10.3115/1073012.1073020 https://aclanthology.org/P01-1008/ 2001-07 50 57