( ( Both ( anaerobic ( and ( aerobic processes ) ) ) ) ( ( are ( found ( to ( ( play ( important roles ) ) ( in ( ( degrading ( the ( contaminant ( mass present ) ) ) ) ( at ( this site ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (DT Both) (JJ anaerobic) (CC and) (JJ aerobic) (NNS processes)) (VP (VBP are) (VP (VBN found) (S (VP (TO to) (VP (VB play) (NP (JJ important) (NNS roles)) (PP (IN in) (S (VP (VBG degrading) (NP (DT the) (JJ contaminant) (NN mass) (NN present)) (PP (IN at) (NP (DT this) (NN site))))))))))) (. .)))
Both anaerobic and aerobic processes are found to play important roles in degrading the contaminant mass present at this site.
(ROOT (S (NP (NP (DT The) (NN structure)) (PP (IN of) (NP (NN mitochondrion)))) (VP (VBZ plays) (NP (NP (DT an) (JJ important) (NN role)) (PP (IN in) (NP (JJ aerobic) (NN respiration))))) (. .)))