( ( ( ( ( Other reptiles ) , ) ( ( ( ( plus , ) ( all birds ) ) and ) mammals ) ) , ) ( ( ( ( have ( a ( 4-chambered heart ) ) ) , ) ( with ( ( complete separation ) ( of ( both ( systemic ( and ( pulmonary circuits ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NP (JJ Other) (NNS reptiles)) (, ,) (NP (NP (NN plus)) (, ,) (NP (DT all) (NNS birds)) (CC and) (NP (NNS mammals))) (, ,)) (VP (VBP have) (NP (DT a) (JJ 4-chambered) (NN heart)) (, ,) (PP (IN with) (NP (NP (JJ complete) (NN separation)) (PP (IN of) (NP (DT both) (JJ systemic) (CC and) (JJ pulmonary) (NNS circuits)))))) (. .)))
Other reptiles, plus, all birds and mammals, have a 4-chambered heart, with complete separation of both systemic and pulmonary circuits.
(ROOT (S (PP (IN Like) (NP (NP (DT all) (NNS tetrapods)) (PP (IN except) (NP (NNS birds) (CC and) (NNS mammals))))) (, ,) (NP (NNS frogs)) (VP (VBP possess) (NP (NP (DT a) (NN heart)) (PP (IN with) (NP (CD three) (NNS chambers))))) (. .)))