( Snakes ( ( have ( a ( three-chambered heart ) ) ) ; ) )
(ROOT (S (NP (NNS Snakes)) (VP (VBP have) (NP (DT a) (JJ three-chambered) (NN heart))) (: ;)))
Snakes have a three-chambered heart;
(ROOT (S (NP (EX There)) (VP (VBP are) (NP (NP (CD three) (NNS chambers)) (PP (IN in) (NP (DT an) (NN amphibian) (NN heart))))) (. .)))