Modal Expressions in Natural Language Sentence and Their Similarity Toshifumi Tanabe author Yasuo Koyama author Kenji Yoshimura author Kosho Shudo author 2002-05 text Proceedings of the Third International Conference on Language Resources and Evaluation (LREC’02) Manuel González Rodríguez editor Carmen Paz Suarez Araujo editor European Language Resources Association (ELRA) Las Palmas, Canary Islands - Spain conference publication tanabe-etal-2002-modal https://aclanthology.org/L02-1105/ 2002-05