text1:  9th circa b.c.First signs of pre-Roman Etruscans
feat_premise_binary_parse: ( ( 9th circa ) ( ( b.c.First signs ) ( of ( pre-Roman Etruscans ) ) ) )
feat_premise_parse: (ROOT (NP (NP (JJ 9th) (NN circa)) (NP (NP (JJ b.c.First) (NNS signs)) (PP (IN of) (NP (JJ pre-Roman) (NNS Etruscans))))))
text2: We haven't learned anything about the pre-Roman Etruscans.
feat_hypothesis_binary_parse: ( We ( ( ( have n't ) ( ( learned anything ) ( about ( the ( pre-Roman Etruscans ) ) ) ) ) . ) )
feat_hypothesis_parse: (ROOT (S (NP (PRP We)) (VP (VBP have) (RB n't) (VP (VBN learned) (NP (NN anything)) (PP (IN about) (NP (DT the) (JJ pre-Roman) (NNS Etruscans))))) (. .)))