( ( ( nonrenewable natural ) ( resources ( -LRB- e.g. ) ) ) . )
(ROOT (NP (NP (JJ nonrenewable) (NN natural)) (NP (NNP resources) (-LRB- -LRB-) (NNP e.g.)) (. .)))
nonrenewable natural resources (e.g..
(ROOT (S (NP (NP (NNP Soil)) (, ,) (PP (IN for) (NP (JJ human) (NNS purposes))) (, ,)) (VP (VBZ is) (S (NP (DT a) (-LRB- -LRB-) (NN n) (-RRB- -RRB-)) (VP (VB nonrenewable) (NP (NN resource))))) (. .)))