( Brain ( ( bloodflow ( ( The blood ) ( ( reaches ( the brain ) ) ( through ( ( ( the ( internal carotid ) ) and ) ( the ( vertebral arteries ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NNP Brain)) (VP (VBD bloodflow) (SBAR (S (NP (DT The) (NN blood)) (VP (VBZ reaches) (NP (DT the) (NN brain)) (PP (IN through) (NP (NP (DT the) (JJ internal) (NN carotid)) (CC and) (NP (DT the) (JJ vertebral) (NNS arteries)))))))) (. .)))
Brain bloodflow The blood reaches the brain through the internal carotid and the vertebral arteries.
(ROOT (S (NP (DT The) (JJ carotid) (NN artery)) (VP (VBZ takes) (NP (NN blood)) (PP (TO to) (NP (DT the) (NN brain)))) (. .)))
The carotid artery takes blood to the brain.