@misc{Pratt:1999,
        title = {Inference Problems in {ExtrAns}: Quick Summary},
        author = {Ian Pratt-Hartmann},
        note = {Draft for internal use only},
        year = 1999,
        
      month = {August},
    biburl = {http://www.bibsonomy.org/bibtex/24a3ed337ae5b8a373287532a4a5b1182/diego_ma},
	keywords = {answer_extraction ambiguity logic},
    }