@InProceedings{pyysalo-EtAl:2009:BioNLP,
  author    = {Pyysalo, Sampo  and  Ohta, Tomoko  and  Kim, Jin-Dong  and  Tsujii, Jun'ichi},
  title     = {Static Relations: a Piece in the Biomedical Information Extraction Puzzle},
  booktitle = {Proceedings of the BioNLP 2009 Workshop},
  month     = {June},
  year      = {2009},
  address   = {Boulder, Colorado},
  publisher = {Association for Computational Linguistics},
  pages     = {1--9},
  url       = {http://www.aclweb.org/anthology/W/W09/W09-1301}
}