( ( ( ( The ( environmental impact ) ) ( of ( leaded gasoline ) ) ) ( in Venezuela ) ) . )
(ROOT (NP (NP (DT The) (JJ environmental) (NN impact)) (PP (IN of) (NP (JJ leaded) (NN gasoline))) (PP (IN in) (NP (NNP Venezuela))) (. .)))
The environmental impact of leaded gasoline in Venezuela .
(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)))))))) (. .)))