text1: Then he sobered.
feat_premise_binary_parse: ( Then ( he ( sobered . ) ) )
feat_premise_parse: (ROOT (S (RB Then) (NP (PRP he)) (VP (VBD sobered)) (. .)))
text2: He was always sober.
feat_hypothesis_binary_parse: ( He ( ( ( was always ) sober ) . ) )
feat_hypothesis_parse: (ROOT (S (NP (PRP He)) (VP (VBD was) (ADVP (RB always)) (ADJP (JJ sober))) (. .)))