We used the constituent split implemented in<cite> Wang and Lan (2015)</cite> . Based on earlier work <cite>(Wang and Lan, 2015</cite>; Lin et al., 2014) , we implement the following features: surface form of the verbs in the sentence (three features), last word of the current constituent (curr), last word of the previous constituent (prev), the first word of curr, and the lowercased form of the connective.