( ( Any ( ( ( simple or ) complex ) carbohydrate ) ) ( ( can ( be ( fermented ( to ( produce ethanol ) ) ) ) ) . ) )
(ROOT (S (NP (DT Any) (ADJP (JJ simple) (CC or) (JJ complex)) (NN carbohydrate)) (VP (MD can) (VP (VB be) (VP (VBN fermented) (S (VP (TO to) (VP (VB produce) (NP (NN ethanol)))))))) (. .)))
Any simple or complex carbohydrate can be fermented to produce ethanol.
(ROOT (S (NP (NN Simple) (NNS carbohydrates)) (VP (MD can) (VP (VB be) (VP (VBN classified) (PP (IN in) (NP (NP (NNS terms)) (PP (IN of) (NP (NN chain) (NN length)))))))) (. .)))