( ( ( ( Land ( , Air ) ) , ) ( Water Stewards ) ) ; )
(ROOT (NP (NP (NNP Land) (, ,) (NNP Air)) (, ,) (NP (NNP Water) (NNP Stewards)) (: ;)))
Land, Air, Water Stewards;
(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))))))) (. .)))