( ( ( Name and ) ( locate ( ( the ( four valves ) ) ( of ( the heart ) ) ) ) ) . )
(ROOT (S (VP (VP (VB Name)) (CC and) (VP (VB locate) (NP (NP (DT the) (CD four) (NNS valves)) (PP (IN of) (NP (DT the) (NN heart)))))) (. .)))
Name and locate the four valves of the heart.
(ROOT (S (NP (EX There)) (VP (VBP are) (NP (NP (CD four) (NNS valves)) (PP (IN in) (NP (DT the) (NN heart))))) (. .)))