( ( The aorta ) ( ( is ( ( the ( main ( blood vessel ) ) ) ( that ( ( carries ( oxygen-rich blood ) ) ( to ( the heart ) ) ) ) ) ) . ) )
(ROOT (S (NP (DT The) (NN aorta)) (VP (VBZ is) (NP (NP (DT the) (JJ main) (NN blood) (NN vessel)) (SBAR (WHNP (WDT that)) (S (VP (VBZ carries) (NP (JJ oxygen-rich) (NN blood)) (PP (TO to) (NP (DT the) (NN heart)))))))) (. .)))
The aorta is the main blood vessel that carries oxygen-rich blood to the heart.
(ROOT (SINV (S (NP (PRP We)) (VP (VBP call) (NP (NP (DT the) (JJ major) (NN artery)) (VP (VBG carrying) (ADVP (RB recently)))))) (VP (VBD oxygenated) (NP (NN blood)) (PRT (RP away)) (PP (IN from) (NP (DT the) (NN heart)))) (NP (DT the) (NN aorta)) (. .)))