( ( ( ( This ( is ( the ( water cycle ) ) ) ) and ) ( it ( just ( keeps repeating ) ) ) ) . )
(ROOT (S (S (NP (DT This)) (VP (VBZ is) (NP (DT the) (NN water) (NN cycle)))) (CC and) (S (NP (PRP it)) (ADVP (RB just)) (VP (VBZ keeps) (S (VP (VBG repeating))))) (. .)))
This is the water cycle and it just keeps repeating.
(ROOT (S (NP (DT The) (NN water) (NN cycle)) (VP (VBZ ends) (SBAR (IN with) (S (NP (PRP it)) (VP (VBZ repeats) (NP (PRP itself)))))) (. .)))
The water cycle ends with it repeats itself.