Interrogative Reformulation Patterns and Acquisition of Question Paraphrases Noriko Tomuro author 2003-07 text Proceedings of the Second International Workshop on Paraphrasing Association for Computational Linguistics Sapporo, Japan conference publication tomuro-2003-interrogative 10.3115/1118984.1118989 https://aclanthology.org/W03-1605/ 2003-07 33 40