@inproceedings{yamamoto-kanzaki-isahara:2004:ACLdemo,
  author    = {Yamamoto, Eiko  and  Kanzaki, Kyoko  and  Isahara, Hitoshi},
  title     = {Hierarchy Extraction based on Inclusion of Appearance},
  booktitle = {The Companion Volume to the Proceedings of 42st Annual Meeting of the Association for Computational Linguistics},
  editor = {},
  year      = 2004,
  month     = {July},
  address   = {Barcelona, Spain},
  publisher = {Association for Computational Linguistics},
  pages     = {150--153}
}