( ( The ( right atrium ) ) ( ( collects ( ( ( blood and ) ( the right ) ) ( ( ventricle then ) ( ( ( pumps it ) ( to ( the lungs ) ) ) ( where ( it ( is oxygenated ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (DT The) (JJ right) (NN atrium)) (VP (VBZ collects) (SBAR (S (NP (NP (NN blood)) (CC and) (NP (DT the) (NN right))) (VP (VBP ventricle) (RB then) (VP (VB pumps) (NP (PRP it)) (PP (TO to) (NP (DT the) (NNS lungs))) (SBAR (WHADVP (WRB where)) (S (NP (PRP it)) (VP (VBZ is) (VP (VBN oxygenated)))))))))) (. .)))
The right atrium collects blood and the right ventricle then pumps it to the lungs where it is oxygenated.
(ROOT (S (NP (NP (NNP Blood)) (PP (IN from) (NP (DT the) (NN body)))) (VP (VBZ enters) (NP (NP (JJ right) (NN atrium)) (PP (IN of) (NP (DT the) (NN heart)))) (SBAR (IN before) (S (NP (PRP it)) (VP (VBZ is) (VP (VBN pumped) (PP (PP (TO to) (NP (DT the) (JJ right) (NN ventricle))) (CC and) (RB then) (PP (TO to) (NP (DT the) (NNS lungs))))))))) (. .)))