( ( These Tsunamis ) ( ( are ( ( large waves ) ( that ( form ( when ( ( ( the ( shock waves ) ) ( of ( ( ( the ( earthquake ( approach ( shallow water ) ) ) ) and ) ( the wave ) ) ) ) ( ( ( ( picks up ) speed ) and ) ( ( rises out ) ( of ( the water ) ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (DT These) (NNPS Tsunamis)) (VP (VBP are) (NP (NP (JJ large) (NNS waves)) (SBAR (WHNP (WDT that)) (S (VP (VBP form) (SBAR (WHADVP (WRB when)) (S (NP (NP (DT the) (NN shock) (NNS waves)) (PP (IN of) (NP (NP (DT the) (NN earthquake) (NN approach) (JJ shallow) (NN water)) (CC and) (NP (DT the) (NN wave))))) (VP (VP (VBZ picks) (PRT (RP up)) (NP (NN speed))) (CC and) (VP (VBZ rises) (PRT (RP out)) (PP (IN of) (NP (DT the) (NN water)))))))))))) (. .)))
These Tsunamis are large waves that form when the shock waves of the earthquake approach shallow water and the wave picks up speed and rises out of the water.
(ROOT (S (SBAR (WHADVP (WRB When)) (S (NP (NP (DT the) (NN energy)) (PP (IN of) (NP (DT the) (NN earthquake)))) (VP (VBZ reaches) (VP (NN shore))))) (, ,) (NP (PRP it)) (VP (VBZ forms) (SBAR (S (NP (DT a) (JJ huge) (NN wave)) (VP (VBD called) (NP (DT a) (NN tsunami)))))) (. .)))