text1: They do not know it themselves.'  
feat_premise_binary_parse: ( They ( ( ( ( do not ) ( know ( it themselves ) ) ) . ) ' ) )
feat_premise_parse: (ROOT (S (NP (PRP They)) (VP (VBP do) (RB not) (VP (VB know) (S (NP (PRP it)) (NP (PRP themselves))))) (. .) ('' ')))
text2: They have no knowledge of it themselves.
feat_hypothesis_binary_parse: ( They ( ( have ( ( no knowledge ) ( of ( it themselves ) ) ) ) . ) )
feat_hypothesis_parse: (ROOT (S (NP (PRP They)) (VP (VBP have) (NP (NP (DT no) (NN knowledge)) (PP (IN of) (NP (NP (PRP it)) (ADVP (PRP themselves)))))) (. .)))