text1: [Requires free registration.
feat_premise_binary_parse: ( ( -LSB- Requires ) ( ( free registration ) . ) )
feat_premise_parse: (ROOT (S (NP (NNP -LSB-) (NNP Requires)) (VP (VBP free) (NP (NN registration))) (. .)))
text2: Does not require free registration. 
feat_hypothesis_binary_parse: ( ( ( Does not ) ( require ( free registration ) ) ) . )
feat_hypothesis_parse: (ROOT (S (VP (VBZ Does) (RB not) (VP (VB require) (NP (JJ free) (NN registration)))) (. .)))