@inproceedings{DBLP:conf/icai/BalahurBMM09,
  author    = {Alexandra Balahur and
               Ester Boldrini and
               Andr{\'e}s Montoyo and
               Patricio Mart\'{\i}nez-Barco},
  title     = {Fact versus Opinion Questions Classification and Answering:
               Challenges and Keys},
  booktitle = {IC-AI},
  year      = {2009},
  pages     = {750-755},
  crossref  = {DBLP:conf/icai/2009},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}

@proceedings{DBLP:conf/icai/2009,
  editor    = {Hamid R. Arabnia and
               David de la Fuente and
               Jos{\'e} Angel Olivas},
  title     = {Proceedings of the 2009 International Conference on Artificial
               Intelligence, ICAI 2009, July 13-16, 2009, Las Vegas Nevada,
               USA, 2 Volumes},
  booktitle = {IC-AI},
  publisher = {CSREA Press},
  year      = {2009},
  isbn      = {1-60132-109-0},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}