@InProceedings{greenwood-stevenson:2006:IEBD,
  author    = {Greenwood, Mark A.  and  Stevenson, Mark},
  title     = {Improving Semi-supervised Acquisition of Relation Extraction Patterns},
  booktitle = {Proceedings of the Workshop on Information Extraction Beyond The Document},
  month     = {July},
  year      = {2006},
  address   = {Sydney, Australia},
  publisher = {Association for Computational Linguistics},
  pages     = {29--35},
  url       = {http://www.aclweb.org/anthology/W/W06/W06-0204}
}