( ( The heart ) ( ( is ( ( a pump ) ( with ( four chambers ) ) ) ) . ) )
(ROOT (S (NP (DT The) (NN heart)) (VP (VBZ is) (NP (NP (DT a) (NN pump)) (PP (IN with) (NP (CD four) (NNS chambers))))) (. .)))
The heart is a pump with four chambers.
(ROOT (S (NP (EX There)) (VP (VBP are) (NP (NP (CD four) (NNS chambers)) (PP (IN in) (NP (DT the) (NN heart))))) (. .)))