( Then ( ( ( the currents ) ( of ( the ( Gulf Stream ) ) ) ) ( ( ( took ( that water ) ) ( across ( the ( North ( Atlantic Ocean ) ) ) ) ) . ) ) )
(ROOT (S (ADVP (RB Then)) (NP (NP (DT the) (NNS currents)) (PP (IN of) (NP (DT the) (NNP Gulf) (NNP Stream)))) (VP (VBD took) (NP (DT that) (NN water)) (PP (IN across) (NP (DT the) (NNP North) (NNP Atlantic) (NNP Ocean)))) (. .)))
Then the currents of the Gulf Stream took that water across the North Atlantic Ocean.
(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)))))))))))) (. .)))