( However ( , ( there ( ( was ( ( the question ) ( of ( how ( ( the blood ) ( ( ( ( flowed ( from ( ( the ( right ventricle ) ) ( of ( the heart ) ) ) ) ) ( to ( the ( left ventricle ) ) ) ) , ) ( before ( ( the blood ) ( is ( pumped ( to ( ( the rest ) ( of ( the body ) ) ) ) ) ) ) ) ) ) ) ) ) ) . ) ) ) )
(ROOT (S (ADVP (RB However)) (, ,) (NP (EX there)) (VP (VBD was) (NP (NP (DT the) (NN question)) (PP (IN of) (SBAR (WHADVP (WRB how)) (S (NP (DT the) (NN blood)) (VP (VBD flowed) (PP (IN from) (NP (NP (DT the) (JJ right) (NN ventricle)) (PP (IN of) (NP (DT the) (NN heart))))) (PP (TO to) (NP (DT the) (JJ left) (NN ventricle))) (, ,) (SBAR (IN before) (S (NP (DT the) (NN blood)) (VP (VBZ is) (VP (VBN pumped) (PP (TO to) (NP (NP (DT the) (NN rest)) (PP (IN of) (NP (DT the) (NN body))))))))))))))) (. .)))
However, there was the question of how the blood flowed from the right ventricle of the heart to the left ventricle, before the blood is pumped to the rest of the body.
(ROOT (S (NP (NP (DT The) (JJ right) (NN atrium)) (PP (IN of) (NP (DT the) (JJ human) (NN heart)))) (VP (VBD pumps) (NP (DT the) (NN blood)) (PP (TO to) (NP (DT the) (JJ right) (NN ventricle)))) (. .)))