nltk_data/misc/mwa_ppdb.xml

<package id="mwa_ppdb" name="The monolingual word aligner (Sultan et al. 2015) subset of the Paraphrase Database."
         webpage="http://www.cis.upenn.edu/~ccb/ppdb/"
         license="Creative Commons Attribution 3.0 Unported (CC-BY)"
         unzip="1"
         />