( ( Compare ( nonrenewable resources ) ) . )
(ROOT (S (VP (VB Compare) (NP (JJ nonrenewable) (NNS resources))) (. .)))
Compare nonrenewable resources .
(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))))) (. .)))