@article{verberne-etal-2010-bag,
    title = "What Is Not in the Bag of Words for Why-{QA}?",
    author = "Verberne, Suzan  and
      Boves, Lou  and
      Oostdijk, Nelleke  and
      Coppen, Peter-Arno",
    journal = "Computational Linguistics",
    volume = "36",
    number = "2",
    month = jun,
    year = "2010",
    address = "Cambridge, MA",
    publisher = "MIT Press",
    url = "https://aclanthology.org/J10-2003/",
    doi = "10.1162/coli.2010.09-032-R1-08-034",
    pages = "229--245"
}