( People ( ( pollute ( ( ( the wetlands ) ( with ( pesticides ( and ( road run-off ) ) ) ) ) ( such ( as ( ( oil and ) gasoline ) ) ) ) ) . ) )
(ROOT (S (NP (NNS People)) (VP (VB pollute) (NP (NP (DT the) (NNS wetlands)) (PP (IN with) (NP (NNS pesticides) (CC and) (NN road) (NN run-off))) (PP (JJ such) (IN as) (NP (NN oil) (CC and) (NN gasoline))))) (. .)))
People pollute the wetlands with pesticides and road run-off such as oil and gasoline.
(ROOT (S (NP (NNS People)) (VP (VBD stopped) (S (VP (VBG adding) (NP (NN lead)) (PP (TO to) (NP (NP (NN gasoline)) (PP (RB because) (IN of) (NP (JJ environmental) (NN pollution)))))))) (. .)))