( Snakes ( ( are ( eaten ( by ( ( ( ( ( ( larger snakes ) , ) hawks ) , ) and ) ( carnivorous mammals ) ) ) ) ) . ) )
(ROOT (S (NP (NNS Snakes)) (VP (VBP are) (VP (VBN eaten) (PP (IN by) (NP (NP (JJR larger) (NNS snakes)) (, ,) (NP (NNS hawks)) (, ,) (CC and) (NP (JJ carnivorous) (NNS mammals)))))) (. .)))
Snakes          are eaten by larger snakes, hawks, and carnivorous mammals.
(ROOT (S (NP (NNS Snakes)) (VP (VBP are) (NP (JJ carnivorous) (NNS animals))) (. .)))