@inproceedings{higgins-2003-machine,
    title = "A machine learning approach to the identification of {WH} gaps",
    author = "Higgins, Derrick",
    editor = "Copestake, Ann  and
      Haji{\v{c}}, Jan",
    booktitle = "10th Conference of the {E}uropean Chapter of the Association for Computational Linguistics",
    month = apr,
    year = "2003",
    address = "Budapest, Hungary",
    publisher = "Association for Computational Linguistics",
    url = "https://preview.aclanthology.org/ingest_wac_2008/E03-1049/"
}