( Soil ( ( is ( ( a ( vital ( natural resource ) ) ) ( that ( , ( ( on ( a ( human ( time scale ) ) ) ) ( , ( is nonrenewable ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NNP Soil)) (VP (VBZ is) (NP (NP (DT a) (JJ vital) (JJ natural) (NN resource)) (SBAR (WHNP (WDT that)) (S (, ,) (PP (IN on) (NP (DT a) (JJ human) (NN time) (NN scale))) (, ,) (VP (VBZ is) (ADJP (JJ nonrenewable))))))) (. .)))
Soil is a vital natural resource that, on a human time scale, is nonrenewable.
(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))))) (. .)))