@InProceedings{yan-EtAl:2009:ACLIJCNLP,
  author    = {Yan, Yulan  and  Okazaki, Naoaki  and  Matsuo, Yutaka  and  Yang, Zhenglu  and  Ishizuka, Mitsuru},
  title     = {Unsupervised Relation Extraction by Mining Wikipedia Texts Using Information from the Web},
  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     = {August},
  year      = {2009},
  address   = {Suntec, Singapore},
  publisher = {Association for Computational Linguistics},
  pages     = {1021--1029},
  url       = {http://www.aclweb.org/anthology/P/P09/P09-1115}
}