@InProceedings{carvalho-EtAl:2011:ACL-HLT2011,
  author    = {Carvalho, Paula  and  Sarmento, Lu\'{i}s  and  Teixeira, Jorge  and  J. Silva, M\'{a}rio},
  title     = {Liars and Saviors in a Sentiment Annotated Corpus of Comments to Political Debates},
  booktitle = {Proceedings of the 49th Annual Meeting of the Association for Computational Linguistics: Human Language Technologies},
  month     = {June},
  year      = {2011},
  address   = {Portland, Oregon, USA},
  publisher = {Association for Computational Linguistics},
  pages     = {564--568},
  url       = {http://www.aclweb.org/anthology/P11-2099}
}