@inproceedings{carterette-etal-2006-n,
    title = "N Semantic Classes are Harder than Two",
    author = "Carterette, Ben  and
      Jones, Rosie  and
      Greiner, Wiley  and
      Barr, Cory",
    booktitle = "Proceedings of the {COLING}/{ACL} 2006 Main Conference Poster Sessions",
    month = jul,
    year = "2006",
    address = "Sydney, Australia",
    publisher = "Association for Computational Linguistics",
    url = "https://preview.aclanthology.org/ingest-emnlp/P06-2007/",
    pages = "49--56"
}