( ( pollution ( of ( ( ( ( ( land , ) air ) , ) and ) water ) ) ) ; )
(ROOT (NP (NP (NN pollution)) (PP (IN of) (NP (NP (NN land)) (, ,) (NP (NN air)) (, ,) (CC and) (NP (NN water)))) (: ;)))
pollution of land, air, and water;
(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))))))) (. .)))