@InProceedings{schiffman-EtAl:2007:main,
  author    = {Schiffman, Barry  and  McKeown, Kathleen  and  Grishman, Ralph  and  Allan, James},
  title     = {Question Answering Using Integrated Information Retrieval and Information Extraction},
  booktitle = {Human Language Technologies 2007: The Conference of the North American Chapter of the Association for Computational Linguistics; Proceedings of the Main Conference},
  month     = {April},
  year      = {2007},
  address   = {Rochester, New York},
  publisher = {Association for Computational Linguistics},
  pages     = {532--539},
  url       = {http://www.aclweb.org/anthology/N/N07/N07-1067}
}