( It ( ( feeds ( on ( coral ( polyps ( and ( sea anemones ) ) ) ) ) ) . ) )
(ROOT (S (NP (PRP It)) (VP (VBZ feeds) (PP (IN on) (NP (NN coral) (NNS polyps) (CC and) (NN sea) (NNS anemones)))) (. .)))
It feeds on coral polyps and sea anemones.
(ROOT (S (NP (NNS Hydras) (CC and) (NN sea) (NNS anemones)) (VP (VBP are) (NP (NP (NNS examples)) (PP (IN of) (NP (NN apolyp))))) (. .)))