@inproceedings{tonelli-cabrio-2012-hunting,
    title = "Hunting for Entailing Pairs in the {P}enn {D}iscourse {T}reebank",
    author = "Tonelli, Sara  and
      Cabrio, Elena",
    editor = "Kay, Martin  and
      Boitet, Christian",
    booktitle = "Proceedings of {COLING} 2012",
    month = dec,
    year = "2012",
    address = "Mumbai, India",
    publisher = "The COLING 2012 Organizing Committee",
    url = "https://preview.aclanthology.org/fix-sig-urls/C12-1162/",
    pages = "2653--2668"
}