@inproceedings{purver-etal-2003-answering,
    title = "Answering Clarification Questions",
    author = "Purver, Matthew  and
      Healey, Patrick G.T.  and
      King, James  and
      Ginzburg, Jonathan  and
      Mills, Greg J.",
    booktitle = "Proceedings of the Fourth {SIG}dial Workshop of Discourse and Dialogue",
    year = "2003",
    url = "https://preview.aclanthology.org/jlcl-multiple-ingestion/W03-2103/",
    pages = "23--33"
}