( ( The ( ( most common ) ( carbohydrate drink ) ) ) ( ( is ( grape juice ) ) . ) )
(ROOT (S (NP (DT The) (ADJP (RBS most) (JJ common)) (JJ carbohydrate) (NN drink)) (VP (VBZ is) (NP (JJ grape) (NN juice))) (. .)))
The most common carbohydrate drink is grape juice.
(ROOT (S (NP (NNS Carbohydrates)) (VP (VBP are) (NP (NP (DT the) (ADJP (RBS most) (JJ common)) (NN type)) (PP (IN of) (NP (JJ organic) (NN compound))))) (. .)))