( ( Soil contamination ) ( ( can ( take ( ( a variety ) ( of forms ) ) ) ) . ) )
(ROOT (S (NP (JJ Soil) (NN contamination)) (VP (MD can) (VP (VB take) (NP (NP (DT a) (NN variety)) (PP (IN of) (NP (NNS forms)))))) (. .)))
Soil contamination can take a variety of forms.
(ROOT (S (NP (NNP Soil)) (VP (VBZ is) (NP (NP (DT a) (JJ renewable) (NN resource)) (SBAR (WHNP (WDT that)) (S (VP (MD can) (VP (VB take) (NP (NP (CD thousand)) (PP (IN of) (NP (NNS years)))) (S (VP (TO to) (VP (VB form)))))))))) (. .)))