( they ( ( run ( on ( ( ( ( ( ( wind , ) sunlight ) , ) ( ocean waves ) ) and ) ( organic gas ) ) ) ) . ) )
(ROOT (S (NP (PRP they)) (VP (VBP run) (PP (IN on) (NP (NP (NN wind)) (, ,) (NP (NN sunlight)) (, ,) (NP (NN ocean) (NNS waves)) (CC and) (NP (JJ organic) (NN gas))))) (. .)))
they run on wind, sunlight, ocean waves and organic gas.
(ROOT (S (NP (NNS Winds)) (VP (VBZ causes) (NP (JJS most) (NN ocean) (NNS waves))) (. .)))
Winds causes most ocean waves.