( ( ( Small pieces ) ( of ( organic matter ) ) ) ( ( will ( ( decompose ( more quickly ) ) ( than ( large chunks ) ) ) ) . ) )
(ROOT (S (NP (NP (JJ Small) (NNS pieces)) (PP (IN of) (NP (JJ organic) (NN matter)))) (VP (MD will) (VP (VB decompose) (ADVP (RBR more) (RB quickly)) (PP (IN than) (NP (JJ large) (NNS chunks))))) (. .)))
Small pieces of organic matter will decompose more quickly than large chunks.
(ROOT (S (NP (NP (NNS Sediments)) (PP (IN in) (NP (JJ oligotrophic) (NNS lakes)))) (VP (VBP contain) (NP (NP (JJ large) (NNS amounts)) (PP (IN of) (NP (JJ decomposable) (JJ organic) (NN matter))))) (. .)))