( ( The heart ) ( ( is ( ( a ( four ( chambered pump ) ) ) ( with ( ( ( two ( controlling ( outflow valves ) ) ) and ) ( ( two valves ) ( that ( ( control flow ) ( into ( the heart ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (DT The) (NN heart)) (VP (VBZ is) (NP (NP (DT a) (CD four) (JJ chambered) (NN pump)) (PP (IN with) (NP (NP (CD two) (VBG controlling) (NN outflow) (NNS valves)) (CC and) (NP (NP (CD two) (NNS valves)) (SBAR (WHNP (WDT that)) (S (VP (VBP control) (NP (NN flow)) (PP (IN into) (NP (DT the) (NN heart))))))))))) (. .)))
The heart is a four chambered pump with two controlling outflow valves and two valves that control flow into the heart.
(ROOT (S (NP (EX There)) (VP (VBP are) (NP (NP (CD four) (NNS valves)) (PP (IN in) (NP (DT the) (NN heart))))) (. .)))