( ( The thorax ) ( ( is ( ( a ( bony cage ) ) ( ( ( formed ( by ( ( ( ( ( ( the ribs ) , ) ( dorsal vertebrae ) ) , ) and ) sternum ) ) ) , ) ( ( ( containing and ) protecting ) ( ( the ( principal organs ) ) ( of ( ( circulation and ) respiration ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (DT The) (NN thorax)) (VP (VBZ is) (NP (NP (DT a) (JJ bony) (NN cage)) (VP (VBN formed) (PP (IN by) (NP (NP (DT the) (NNS ribs)) (, ,) (NP (JJ dorsal) (NN vertebrae)) (, ,) (CC and) (NP (NN sternum)))) (, ,) (S (VP (VBG containing) (CC and) (VBG protecting) (NP (NP (DT the) (JJ principal) (NNS organs)) (PP (IN of) (NP (NN circulation) (CC and) (NN respiration))))))))) (. .)))
The thorax is a bony cage formed by the ribs, dorsal vertebrae, and sternum, containing and protecting the principal organs of circulation and respiration.
(ROOT (S (NP (DT The) (NN sternum)) (VP (VBZ is) (NP (NP (DT the) (NN name)) (PP (IN of) (NP (NP (DT the) (JJ elongated) (NN bony) (NN structure)) (SBAR (WHNP (WDT that)) (S (VP (VBZ anchors) (NP (DT the) (JJ anterior) (JJ thoracic) (NN cage))))))))) (. .)))