( ( The ( pulmonary artery ) ) ( ( ( carries blood ) ( from ( ( the heart ) ( to ( ( ( the lungs ) , ) ( where ( it ( receives oxygen ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (DT The) (JJ pulmonary) (NN artery)) (VP (VBZ carries) (NP (NN blood)) (PP (IN from) (NP (NP (DT the) (NN heart)) (PP (TO to) (NP (NP (DT the) (NNS lungs)) (, ,) (SBAR (WHADVP (WRB where)) (S (NP (PRP it)) (VP (VBZ receives) (NP (NN oxygen)))))))))) (. .)))
The pulmonary artery carries blood from the heart to the lungs, where it receives oxygen.
(ROOT (S (SBAR (IN After) (S (NP (NP (DT the) (NN blood)) (PP (IN in) (NP (DT the) (JJ pulmonary) (NNS capillaries)))) (VP (VBZ becomes) (VP (VBN saturated) (PP (IN with) (NP (NN oxygen))))))) (, ,) (NP (PRP it)) (VP (VBZ leaves) (NP (NP (DT the) (NNS lungs) (CC and) (NNS travels)) (PP (TO to) (NP (DT the) (NN heart))))) (. .)))