( ( ( The value ) ( of ( classifying ( carbohydrates ( as ( ( simple or ) complex ) ) ) ) ) ) ( ( is questionable ) . ) )
(ROOT (S (NP (NP (DT The) (NN value)) (PP (IN of) (S (VP (VBG classifying) (S (NP (NNS carbohydrates)) (ADJP (RB as) (JJ simple) (CC or) (JJ complex))))))) (VP (VBZ is) (ADJP (JJ questionable))) (. .)))
The value of classifying carbohydrates as simple or complex is questionable.
(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)))))))) (. .)))