( ( ( 1 gram ) ( of sugar ) ) ( ( provides ( ( 4 Kcal ) ( of energy ) ) ) . ) )
(ROOT (S (NP (NP (CD 1) (NN gram)) (PP (IN of) (NP (NN sugar)))) (VP (VBZ provides) (NP (NP (CD 4) (NN Kcal)) (PP (IN of) (NP (NN energy))))) (. .)))
1 gram of sugar provides 4 Kcal of energy.
(ROOT (S (NP (NP (CD One) (NN gram)) (PP (IN of) (NP (NN sugar) (CC or) (NN starch)))) (VP (VBZ provides) (NP (NP (CD 4) (NNS calories)) (PP (IN of) (NP (NN energy))))) (. .)))