( Only ( ( with ( this ( understanding can ) ) ) ( we ( ( hope ( to ( ( preserve ( the ( non-renewable ( soil resource ) ) ) ) ( for ( future generations ) ) ) ) ) . ) ) ) )
(ROOT (S (RB Only) (PP (IN with) (NP (DT this) (NN understanding) (NN can))) (NP (PRP we)) (VP (VBP hope) (S (VP (TO to) (VP (VB preserve) (NP (DT the) (JJ non-renewable) (NN soil) (NN resource)) (PP (IN for) (NP (JJ future) (NNS generations))))))) (. .)))
Only with this understanding can we hope to preserve the non-renewable soil resource for future generations.
(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)))))))))) (. .)))