( ( ( A component ) ( of ( ( ( ( ( the ( vertebral column ) ) , ) or ) backbone ) , ) ) ) ( ( found ( in vertebrates ) ) . ) )
(ROOT (S (NP (NP (DT A) (NN component)) (PP (IN of) (NP (NP (DT the) (JJ vertebral) (NN column)) (, ,) (CC or) (NP (NN backbone)) (, ,)))) (VP (VBD found) (PP (IN in) (NP (NNS vertebrates)))) (. .)))
A component of the vertebral column, or backbone, found in vertebrates.
(ROOT (S (NP (NNP Backbone)) (VP (VBZ is) (NP (NP (DT another) (NN name)) (PP (IN for) (NP (DT the) (JJ vertebral) (NN column))))) (. .)))
Backbone is another name for the vertebral column.