text1: Czarek had to fight for attention:
feat_premise_binary_parse: ( Czarek ( ( had ( to ( fight ( for attention ) ) ) ) : ) )
feat_premise_parse: (ROOT (S (NP (NNP Czarek)) (VP (VBD had) (S (VP (TO to) (VP (VB fight) (PP (IN for) (NP (NN attention))))))) (: :)))
text2: Czarek did not have to fight for attention. 
feat_hypothesis_binary_parse: ( Czarek ( ( ( did not ) ( have ( to ( fight ( for attention ) ) ) ) ) . ) )
feat_hypothesis_parse: (ROOT (S (NP (NNP Czarek)) (VP (VBD did) (RB not) (VP (VB have) (S (VP (TO to) (VP (VB fight) (PP (IN for) (NP (NN attention)))))))) (. .)))