( Amphibians ( ( ( have ( a ( three-chambered heart ) ) ) ( with ( ( partial separation ) ( of ( ( ( oxygenated and ) deoxygenated ) blood ) ) ) ) ) . ) )
(ROOT (S (NP (NNS Amphibians)) (VP (VBP have) (NP (DT a) (JJ three-chambered) (NN heart)) (PP (IN with) (NP (NP (JJ partial) (NN separation)) (PP (IN of) (NP (ADJP (JJ oxygenated) (CC and) (JJ deoxygenated)) (NN blood)))))) (. .)))
Amphibians have a three-chambered heart with partial separation of oxygenated and deoxygenated blood.
(ROOT (S (NP (EX There)) (VP (VBP are) (NP (NP (CD three) (NNS chambers)) (PP (IN in) (NP (DT an) (NN amphibian) (NN heart))))) (. .)))