@InProceedings{castillo-estrella:2012:STARSEM-SEMEVAL,
  author    = {Castillo, Julio  and  Estrella, Paula},
  title     = {SAGAN: An approach to Semantic Textual Similarity based on Textual Entailment},
  booktitle = {{*SEM 2012}: The First Joint Conference on Lexical and Computational Semantics -- Volume 1: Proceedings of the main conference and the shared task, and Volume 2: Proceedings of the Sixth International Workshop on Semantic Evaluation {(SemEval 2012)}},
  month     = {7-8 June},
  year      = {2012},
  address   = {Montr\'eal, Canada},
  publisher = {Association for Computational Linguistics},
  pages     = {667--672},
  url       = {http://www.aclweb.org/anthology/S12-1099}
}