Performance of the monolingual MT-based method in paraphrase generation is limited by the large-scale paraphrase corpus it relies on as the corpus is not readily available .
bilingual parallel data is in abundance and has been used in extracting paraphrase (Bannard and Callison-Burch, 2005;Zhao et al., 2008b;Callison-Burch, 2008;Kok and Brockett, 2010;Kuhn et al., 2010;Ganitkevitch et al., 2011).