( ( ( ( ( ( ( ( The wind ) ( is ( ( the ( driving force ) ) ( of ( weather ( at sea ) ) ) ) ) ) , ) ( ( as ( wind ( generates ( local ( wind waves ) ) ) ) ) ( , ( ( long ocean ) swells ) ) ) ) , ) and ) ( ( ( its flow ) ( around ( the ( subtropical ridge ) ) ) ) ( helps ( maintain ( ( warm ( water currents ) ) ( such ( as ( the ( Gulf Stream ) ) ) ) ) ) ) ) ) . )
(ROOT (S (S (NP (DT The) (NN wind)) (VP (VBZ is) (NP (NP (DT the) (VBG driving) (NN force)) (PP (IN of) (NP (NP (NN weather)) (PP (IN at) (NP (NN sea)))))))) (, ,) (S (SBAR (IN as) (S (NP (NN wind)) (VP (VBZ generates) (NP (JJ local) (NN wind) (NNS waves))))) (, ,) (NP (JJ long) (NN ocean)) (VP (VBZ swells))) (, ,) (CC and) (S (NP (NP (PRP$ its) (NN flow)) (PP (IN around) (NP (DT the) (JJ subtropical) (NN ridge)))) (VP (VBZ helps) (VP (VB maintain) (NP (NP (JJ warm) (NN water) (NNS currents)) (PP (JJ such) (IN as) (NP (DT the) (NNP Gulf) (NNP Stream))))))) (. .)))
The wind is the driving force of weather at sea, as wind generates local wind waves, long ocean swells, and its flow around the subtropical ridge helps maintain warm water currents such as the Gulf Stream.
(ROOT (S (NP (DT A) (NN current)) (VP (VBZ is) (NP (NP (DT a) (NN stream)) (PP (IN of) (S (VP (VBG moving) (NP (NP (NN water)) (SBAR (WHNP (WDT that)) (S (VP (VBZ flows) (PP (IN through) (NP (DT the) (NN ocean)))))))))))) (. .)))