( ( The ( normal heart ) ) ( ( has ( four chambers ) ) . ) )
(ROOT (S (NP (DT The) (JJ normal) (NN heart)) (VP (VBZ has) (NP (CD four) (NNS chambers))) (. .)))
The normal heart has four chambers.
(ROOT (S (NP (EX There)) (VP (VBP are) (NP (NP (CD four) (NNS chambers)) (PP (IN in) (NP (DT the) (NN heart))))) (. .)))