( ( This hurricane ) ( ( ( ( moved ( north ( of ( the ( West Indies ) ) ) ) ) and ) ( brushed ( ( the ( United ( States ' ) ) ) ( east coast ) ) ) ) . ) )
(ROOT (S (NP (DT This) (NN hurricane)) (VP (VP (VBD moved) (NP (NP (NN north)) (PP (IN of) (NP (DT the) (NNP West) (NNP Indies))))) (CC and) (VP (VBD brushed) (NP (NP (DT the) (NNP United) (NNPS States) (POS ')) (JJ east) (NN coast)))) (. .)))
This hurricane moved north of the West Indies and brushed the United States' east coast.
(ROOT (S (NP (NP (DT The) (JJS best) (NN explanation)) (PP (IN for) (SBAR (WHADVP (WRB how)) (S (NP (NN air) (NNS masses)) (VP (VBP move) (PP (IN across) (NP (DT the) (VBN united) (NNS states)))))))) (VP (VBZ is) (SBAR (IN that) (S (NP (DT the) (VBG prevailing) (NNS westerlies)) (VP (VP (VBP move) (NP (NN air) (NNS masses)) (PP (IN from) (NP (NN west))) (PP (TO to) (ADJP (JJ east))) (PP (IN across) (NP (DT the) (VBN united) (NNS states)))) (CC but) (VP (MD may) (VP (VB be) (VP (VBN deflected) (PP (IN by) (NP (DT the) (NN jet) (NN stream)))))))))) (. .)))