text1: Don't remember. 
feat_premise_binary_parse: ( ( ( Do n't ) remember ) . )
feat_premise_parse: (ROOT (S (VP (VB Do) (RB n't) (VP (VB remember))) (. .)))
text2: I can't remember.
feat_hypothesis_binary_parse: ( I ( ( ( ca n't ) remember ) . ) )
feat_hypothesis_parse: (ROOT (S (NP (PRP I)) (VP (MD ca) (RB n't) (VP (VB remember))) (. .)))