text1: We have heard, seen this pattern before.
feat_premise_binary_parse: ( We ( ( have ( ( ( ( heard , ) seen ) ( this pattern ) ) before ) ) . ) )
feat_premise_parse: (ROOT (S (NP (PRP We)) (VP (VBP have) (VP (VBN heard) (, ,) (VBN seen) (NP (DT this) (NN pattern)) (PP (IN before)))) (. .)))
text2: We've never seen or heard this pattern before.
feat_hypothesis_binary_parse: ( We ( ( ( 've never ) ( ( ( seen or ) heard ) ( ( this pattern ) before ) ) ) . ) )
feat_hypothesis_parse: (ROOT (S (NP (PRP We)) (VP (VBP 've) (ADVP (RB never)) (VP (VBN seen) (CC or) (VBN heard) (ADVP (NP (DT this) (NN pattern)) (IN before)))) (. .)))