@inproceedings{yan-etal-2009-unsupervised,
    title = "Unsupervised Relation Extraction by Mining {W}ikipedia Texts Using Information from the Web",
    author = "Yan, Yulan  and
      Okazaki, Naoaki  and
      Matsuo, Yutaka  and
      Yang, Zhenglu  and
      Ishizuka, Mitsuru",
    editor = "Su, Keh-Yih  and
      Su, Jian  and
      Wiebe, Janyce  and
      Li, Haizhou",
    booktitle = "Proceedings of the Joint Conference of the 47th Annual Meeting of the {ACL} and the 4th International Joint Conference on Natural Language Processing of the {AFNLP}",
    month = aug,
    year = "2009",
    address = "Suntec, Singapore",
    publisher = "Association for Computational Linguistics",
    url = "https://aclanthology.org/P09-1115/",
    pages = "1021--1029"
}