( ( The ( human backbone ) ) ( ( has ( 24 vertebrae ) ) . ) )
(ROOT (S (NP (DT The) (JJ human) (NN backbone)) (VP (VBZ has) (NP (CD 24) (NN vertebrae))) (. .)))
The human backbone has 24 vertebrae.
(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))))))) (. .)))
Vertebrata are characterized by the presence of backbone.