More recently, (Anonymous, 2007) proposed a new metric, the Sumo-Metric specially designed for asymmetrical entailed pairs identification, and proved better performance over previous established metrics, even in the specific case when tested with the Microsoft Paraphrase Research Corpus (Dolan & Brockett, 2004) . In particular, it shows systematically better F-Measure and Accuracy measures over all other metrics showing an improvement of (1) at least 2.86% in terms of F-Measure and 3.96% in terms of Accuracy and (2) at most 6.61% in terms of FMeasure and 6.74% in terms of Accuracy compared to the second best metric which is also systematically the word N-gram overlap similarity measure used by<cite> (Barzilay & Lee, 2003)</cite> .