What Is Not in the Bag of Words for Why-QA? Suzan Verberne author Lou Boves author Nelleke Oostdijk author Peter-Arno Coppen author 2010-06 text journal article Computational Linguistics continuing MIT Press Cambridge, MA periodical academic journal verberne-etal-2010-bag 10.1162/coli.2010.09-032-R1-08-034 https://aclanthology.org/J10-2003/ 2010-06 36 2 229 245