( ( Protect ( land ( , ( ( water and ) air ) ) ) ) . )
(ROOT (S (VP (VB Protect) (NP (NN land) (, ,) (NN water) (CC and) (NN air))) (. .)))
Protect land, water and 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))))))) (. .)))