The vast majority of prior methods assume a domain independent context, and rely on Wikipedia and Simple English Wikipedia, a subset of Wikipedia using simplified grammar and terminology, to learn simplifications <cite>(Biran et al., 2011</cite>; Paetzold and Specia, 2015) , with translationbased approaches using an aligned version (Coster and Kauchak, 2011; Horn et al., 2014; Yatskar et al., 2010) .