text1: it was difficult
feat_premise_binary_parse: ( it ( was difficult ) )
feat_premise_parse: (ROOT (S (NP (PRP it)) (VP (VBD was) (ADJP (JJ difficult)))))
text2: It was easy.
feat_hypothesis_binary_parse: ( It ( ( was easy ) . ) )
feat_hypothesis_parse: (ROOT (S (NP (PRP It)) (VP (VBD was) (ADJP (JJ easy))) (. .)))