text1: This is Susan.
feat_premise_binary_parse: ( This ( ( is Susan ) . ) )
feat_premise_parse: (ROOT (S (NP (DT This)) (VP (VBZ is) (NP (NNP Susan))) (. .)))
text2: Susan is who this is. 
feat_hypothesis_binary_parse: ( Susan ( ( is ( who ( this is ) ) ) . ) )
feat_hypothesis_parse: (ROOT (S (NP (NNP Susan)) (VP (VBZ is) (SBAR (WHNP (WP who)) (S (NP (DT this)) (VP (VBZ is))))) (. .)))