( ( ( ( ( ( The Calorie ) ( -LRB- ( ( with ( a ( capital C ) ) ) -RRB- ) ) ) , ) ( usually ( used ( to ( indicate ( ( the ( energy content ) ) ( of food ) ) ) ) ) ) ) , ) ( ( is ( a kilocalorie ) ) . ) )
(ROOT (S (NP (NP (NP (DT The) (NN Calorie)) (PRN (-LRB- -LRB-) (PP (IN with) (NP (DT a) (NN capital) (NNP C))) (-RRB- -RRB-))) (, ,) (VP (ADVP (RB usually)) (VBN used) (S (VP (TO to) (VP (VB indicate) (NP (NP (DT the) (NN energy) (NN content)) (PP (IN of) (NP (NN food)))))))) (, ,)) (VP (VBZ is) (NP (DT a) (NN kilocalorie))) (. .)))
The Calorie (with a capital C), usually used to indicate the energy content of food, is a kilocalorie.
(ROOT (S (NP (NP (DT The) (NN energy) (NN content)) (PP (IN of) (NP (NNS foods)))) (VP (VBZ is) (ADVP (RB often)) (VP (VBN expressed) (PP (IN in) (NP (NNS calories))))) (. .)))
The energy content of foods is often expressed in calories.