( Ventricle ( ( The heart ) ( ( has ( four chambers ) ) . ) ) )
(ROOT (S (ADVP (RB Ventricle)) (NP (DT The) (NN heart)) (VP (VBZ has) (NP (CD four) (NNS chambers))) (. .)))
Ventricle The 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))))) (. .)))