semantic equivalence

J. Herrera, Peñas, A., Verdejo, F., Marín, R., Onaindia, E., Bugarín, A., and Santos, J., “Techniques for Recognizing Textual Entailment and Semantic Equivalence”, 11th Conference of the Spanish Association for Artificial Intelligence, CAEPIA 2005. Revised Selected Papers, vol. 4177. Springer, Santiago de Compostela, Spain, p. 418--428, 2006.