@inproceedings{pradhan-xue-2009-ontonotes,
    title = "{O}nto{N}otes: The 90{\%} Solution",
    author = "Pradhan, Sameer S.  and
      Xue, Nianwen",
    editor = "Chelba, Ciprian  and
      Kantor, Paul  and
      Roark, Brian",
    booktitle = "Proceedings of Human Language Technologies: The 2009 Annual Conference of the North {A}merican Chapter of the Association for Computational Linguistics, Companion Volume: Tutorial Abstracts",
    month = may,
    year = "2009",
    address = "Boulder, Colorado",
    publisher = "Association for Computational Linguistics",
    url = "https://preview.aclanthology.org/ingest_wac_2008/N09-4006/",
    pages = "11--12"
}