@InProceedings{balahur-EtAl:2009:RANLP09,
  author    = {Balahur, Alexandra  and  Boldrini, Ester  and  Montoyo, Andr\'{e}s  and  Mart\'{i}nez-Barco, Patricio},
  title     = {A Comparative Study of Open Domain and Opinion Question Answering Systems for Factual and Opinionated Queries},
  booktitle = {Proceedings of the International Conference RANLP-2009},
  month     = {September},
  year      = {2009},
  address   = {Borovets, Bulgaria},
  publisher = {Association for Computational Linguistics},
  pages     = {18--22},
  url       = {http://www.aclweb.org/anthology/R09-1004}
}