( ( For example ) ( ( ( ( ocean waves ) or ) ( the wind ) ) ( ( blowing ( through ( the trees ) ) ) . ) ) )
(ROOT (S (PP (IN For) (NP (NN example))) (NP (NP (NN ocean) (NNS waves)) (CC or) (NP (DT the) (NN wind))) (VP (VBZ blowing) (PP (IN through) (NP (DT the) (NNS trees)))) (. .)))
For example ocean waves or the wind blowing through the trees.
(ROOT (S (NP (JJS Most) (NN ocean) (NNS waves)) (VP (VBP are) (VP (VBN caused) (PP (IN by) (NP (NN wind))))) (. .)))