@inproceedings{mackinlay-etal-2009-biomedical,
    title = "Biomedical Event Annotation with {CRF}s and Precision Grammars",
    author = "MacKinlay, Andrew  and
      Martinez, David  and
      Baldwin, Timothy",
    editor = "Tsujii, Jun{'}ichi",
    booktitle = "Proceedings of the {B}io{NLP} 2009 Workshop Companion Volume for Shared Task",
    month = jun,
    year = "2009",
    address = "Boulder, Colorado",
    publisher = "Association for Computational Linguistics",
    url = "https://preview.aclanthology.org/jlcl-multiple-ingestion/W09-1410/",
    pages = "77--85"
}