( ( 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 (NNS Winds)) (VP (VBZ causes) (NP (JJS most) (NN ocean) (NNS waves))) (. .)))
Winds causes most ocean waves.