sentence1_binary_parse: ( ( The ( human backbone ) ) ( ( has ( 24 vertebrae ) ) . ) )
sentence1_parse: (ROOT (S (NP (DT The) (JJ human) (NN backbone)) (VP (VBZ has) (NP (CD 24) (NN vertebrae))) (. .)))
sentence1: The human backbone has 24 vertebrae.
sentence2_parse: (ROOT (S (NP (NNP Vertebrata)) (VP (VBP are) (VP (VBN characterized) (PP (IN by) (NP (NP (DT the) (NN presence)) (PP (IN of) (NP (NN backbone))))))) (. .)))
sentence2: Vertebrata are characterized by the presence of backbone.