@article{surdeanu-etal-2011-learning,
    title = "Learning to Rank Answers to Non-Factoid Questions from Web Collections",
    author = "Surdeanu, Mihai  and
      Ciaramita, Massimiliano  and
      Zaragoza, Hugo",
    journal = "Computational Linguistics",
    volume = "37",
    number = "2",
    month = jun,
    year = "2011",
    address = "Cambridge, MA",
    publisher = "MIT Press",
    url = "https://preview.aclanthology.org/fix-sig-urls/J11-2003/",
    doi = "10.1162/COLI_a_00051",
    pages = "351--383"
}