( ( By ( ( shutting down ) ( ( the flow ) ( of ( water ( between ( the ( two oceans ) ) ) ) ) ) ) ) ( , ( ( the ( land bridge ) ) ( ( ( rerouted ( ocean currents ) ) ( in ( both ( the ( Atlantic ( and ( Pacific Oceans ) ) ) ) ) ) ) . ) ) ) )
(ROOT (S (PP (IN By) (S (VP (VBG shutting) (PRT (RP down)) (NP (NP (DT the) (NN flow)) (PP (IN of) (NP (NP (NN water)) (PP (IN between) (NP (DT the) (CD two) (NNS oceans))))))))) (, ,) (NP (DT the) (NN land) (NN bridge)) (VP (VBD rerouted) (NP (NN ocean) (NNS currents)) (PP (IN in) (NP (PDT both) (DT the) (NNP Atlantic) (CC and) (NNP Pacific) (NNP Oceans)))) (. .)))
By shutting down the flow of water between the two oceans, the land bridge rerouted ocean currents in both the Atlantic and Pacific Oceans.
(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)))))))))))) (. .)))