@InProceedings{carterette-EtAl:2006:POS,
  author    = {Carterette, Ben  and  Jones, Rosie  and  Greiner, Wiley  and  Barr, Cory},
  title     = {N Semantic Classes are Harder than Two},
  booktitle = {Proceedings of the COLING/ACL 2006 Main Conference Poster Sessions},
  month     = {July},
  year      = {2006},
  address   = {Sydney, Australia},
  publisher = {Association for Computational Linguistics},
  pages     = {49--56},
  url       = {http://www.aclweb.org/anthology/P/P06/P06-2007}
}