( Transportation ( ( is ( ( ( ( ( ( by land ) , ) ( by water ) ) , ) and ) ( by air ) ) ) . ) )
(ROOT (S (NP (NNP Transportation)) (VP (VBZ is) (PP (PP (IN by) (NP (NN land))) (, ,) (PP (IN by) (NP (NN water))) (, ,) (CC and) (PP (IN by) (NP (NN air))))) (. .)))
Transportation is by land, by water, and by air.
(ROOT (S (NP (DT The) (NN water) (NN cycle)) (VP (VBZ involves) (NP (NP (NN movement)) (PP (IN of) (NP (NP (NN water)) (PP (IN between) (NP (NN air) (CC and) (NN land))))))) (. .)))