@incollection{step2008:2209,
 author = "Delmonte, Rodolfo and Pianta, Emanuele",
 title = "{Answering Why-Questions in Closed Domains from a Discourse Model}",
 booktitle = "Semantics in Text Processing. STEP 2008 Conference Proceedings",
 editor = "Bos, Johan and Delmonte, Rodolfo",
 publisher = "College Publications",
 series = "Research in Computational Semantics",
 volume = "1",
 pages = "103--114",
 year = "2008",
 url = "http://www.aclweb.org/anthology/W08-2209"
}