( ( ( The majority ) ( of mollusks ) ) ( ( live ( in ( the ocean ) ) ) . ) )
(ROOT (S (NP (NP (DT The) (NN majority)) (PP (IN of) (NP (NNS mollusks)))) (VP (VBP live) (PP (IN in) (NP (DT the) (NN ocean)))) (. .)))
The majority of mollusks live in the ocean.
(ROOT (S (NP (NP (DT The) (NN majority)) (PP (IN of) (NP (NNS species)))) (VP (VBP live) (PP (IN in) (NP (DT the) (NN ocean)))) (. .)))