( ( Most ( coral reefs ) ) ( ( are ( found ( in ( warm ( and ( tropical oceans ) ) ) ) ) ) . ) )
(ROOT (S (NP (JJS Most) (NN coral) (NNS reefs)) (VP (VBP are) (VP (VBN found) (PP (IN in) (NP (JJ warm) (CC and) (JJ tropical) (NNS oceans))))) (. .)))
Most coral reefs are found in warm and tropical oceans.
(ROOT (S (NP (NP (NNP Ocean) (NNP ridges)) (VP (VBN formed) (PP (IN by) (NP (NP (JJ marine) (NNS invertebrates)) (VP (VBG living) (PP (IN in) (NP (JJ warm) (JJ shallow) (NNS waters))) (PP (IN within) (NP (NP (DT the) (JJ photic) (NN zone)) (PP (IN of) (NP (DT the) (NN ocean)))))))))) (VP (VBP are) (VP (VBN called) (NP (NN coral) (NNS reefs)))) (. .)))