sentence1_binary_parse: ( She ( ( ( ( walked ( her fingers ) ) ( up ( ( ( my backbone ) , ) ( one vertebra ) ) ) ) ( at ( a time ) ) ) . ) )
sentence1_parse: (ROOT (S (NP (PRP She)) (VP (VBD walked) (NP (PRP$ her) (NNS fingers)) (PP (IN up) (NP (NP (PRP$ my) (NN backbone)) (, ,) (NP (CD one) (NN vertebra)))) (PP (IN at) (NP (DT a) (NN time)))) (. .)))
sentence1: She walked her fingers up my backbone, one vertebra at a time.
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.