Automatic extraction of paraphrastic phrases from medium-size corpora Thierry Poibeau author 2004-aug 23–aug 27 text COLING 2004: Proceedings of the 20th International Conference on Computational Linguistics COLING Geneva, Switzerland conference publication poibeau-2004-automatic https://aclanthology.org/C04-1092/ 2004-aug 23–aug 27 638 644