text1: The air is warm.
feat_premise_binary_parse: ( ( The air ) ( ( is warm ) . ) )
feat_premise_parse: (ROOT (S (NP (DT The) (NN air)) (VP (VBZ is) (ADJP (JJ warm))) (. .)))
text2: The frigid air caught them all by surprise.
feat_hypothesis_binary_parse: ( ( The ( frigid air ) ) ( ( ( caught them ) ( all ( by surprise ) ) ) . ) )
feat_hypothesis_parse: (ROOT (S (NP (DT The) (JJ frigid) (NN air)) (VP (VBD caught) (NP (PRP them)) (PP (DT all) (IN by) (NP (NN surprise)))) (. .)))