( Cellulose ( ( can ( be ( ( converted ( into glucose ) ) ( by ( acid digestion ) ) ) ) ) . ) )
(ROOT (S (NP (NNP Cellulose)) (VP (MD can) (VP (VB be) (VP (VBN converted) (PP (IN into) (NP (NN glucose))) (PP (IN by) (NP (JJ acid) (NN digestion)))))) (. .)))
Cellulose can be converted into glucose by acid digestion.
(ROOT (S (NP (NNP Cellulose)) (VP (VBZ is) (VP (VBN created) (PP (IN by) (NP (NP (DT the) (NN polymerization)) (PP (IN of) (NP (NN glucose))))))) (. .)))