@inproceedings{celikyilmaz-etal-2009-graph,
    title = "A Graph-based Semi-Supervised Learning for Question-Answering",
    author = "Celikyilmaz, Asli  and
      Thint, Marcus  and
      Huang, Zhiheng",
    editor = "Su, Keh-Yih  and
      Su, Jian  and
      Wiebe, Janyce  and
      Li, Haizhou",
    booktitle = "Proceedings of the Joint Conference of the 47th Annual Meeting of the {ACL} and the 4th International Joint Conference on Natural Language Processing of the {AFNLP}",
    month = aug,
    year = "2009",
    address = "Suntec, Singapore",
    publisher = "Association for Computational Linguistics",
    url = "https://preview.aclanthology.org/ingest-emnlp/P09-1081/",
    pages = "719--727"
}