( ( ( ( ( ( ( The ( ( waves and ) foam ) ) , ) ( the currents ) ) , ) and ) ( the ( deep ( ocean waters ) ) ) ) ( ( ( are not ) different ) . ) )
(ROOT (S (NP (NP (DT The) (NNS waves) (CC and) (NN foam)) (, ,) (NP (DT the) (NNS currents)) (, ,) (CC and) (NP (DT the) (JJ deep) (NN ocean) (NNS waters))) (VP (VBP are) (RB not) (ADJP (JJ different))) (. .)))
The waves and foam, the currents, and the deep ocean waters are not different.
(ROOT (S (NP (JJ Deep) (NNS currents)) (VP (VBP are) (VP (VBN caused) (PP (IN by) (NP (NP (NNS differences)) (PP (IN in) (NP (NN density))))) (PP (IN at) (NP (NP (DT the) (NN top) (CC and) (NN bottom)) (PP (IN of) (NP (DT the) (NN ocean))))))) (. .)))