@inproceedings{ng-etal-2001-question,
    title = "Question Answering Using a Large Text Database: A Machine Learning Approach",
    author = "Ng, Hwee Tou  and
      Kwan, Jennifer Lai Pheng  and
      Xia, Yiyuan",
    booktitle = "Proceedings of the 2001 Conference on Empirical Methods in Natural Language Processing",
    year = "2001",
    url = "https://preview.aclanthology.org/jlcl-multiple-ingestion/W01-0509/"
}