( ( Oxygenated blood ) ( ( ( ( ( ( ( ( leaves ( ( the ( blood vessels ) ) ( of ( the lungs ) ) ) ) and ) ( enters ( ( the ( left atrium ) ) ( of ( the heart ) ) ) ) ) , ) ( goes ( to ( the ventricle ) ) ) ) and ) ( is ( ( ( pumped out ) ( of ( the heart ) ) ) ( into ( the aorta ) ) ) ) ) . ) )
(ROOT (S (NP (JJ Oxygenated) (NN blood)) (VP (VP (VBZ leaves) (NP (NP (DT the) (NN blood) (NNS vessels)) (PP (IN of) (NP (DT the) (NNS lungs))))) (CC and) (VP (VBZ enters) (NP (NP (DT the) (JJ left) (NN atrium)) (PP (IN of) (NP (DT the) (NN heart))))) (, ,) (VP (VBZ goes) (PP (TO to) (NP (DT the) (NN ventricle)))) (CC and) (VP (VBZ is) (VP (VBN pumped) (PRT (RP out)) (PP (IN of) (NP (DT the) (NN heart))) (PP (IN into) (NP (DT the) (NN aorta)))))) (. .)))
Oxygenated blood leaves the blood vessels of the lungs and enters the left atrium of the heart, goes to the ventricle and is pumped out of the heart into the aorta.
(ROOT (S (NP (NP (NNP Blood)) (PP (IN from) (NP (DT the) (NNS lungs)))) (VP (VBZ enters) (PP (IN into) (NP (DT the) (JJ left) (NN atrium)))) (. .)))