( ( Heart Valve ) ( ( Disease ( ( ( The ( four valves ) ) ( in ( the heart ) ) ) ( are ( designed ( to ( allow ( ( smooth ( blood flow ) ) ( in ( one direction ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NNP Heart) (NNP Valve)) (VP (VBD Disease) (SBAR (S (NP (NP (DT The) (CD four) (NNS valves)) (PP (IN in) (NP (DT the) (NN heart)))) (VP (VBP are) (VP (VBN designed) (S (VP (TO to) (VP (VB allow) (NP (NP (JJ smooth) (NN blood) (NN flow)) (PP (IN in) (NP (CD one) (NN direction)))))))))))) (. .)))
Heart Valve Disease The four valves in the heart are designed to allow smooth blood flow in one direction.
(ROOT (S (NP (EX There)) (VP (VBP are) (NP (NP (CD four) (NNS valves)) (PP (IN in) (NP (DT the) (NN heart))))) (. .)))