( ( ( A ( -RRB- ( A calorie ) ) ) ( is ( ( a unit ) ( of ( measure ( used ( to ( express ( ( the amount ) ( of energy ) ) ) ) ) ) ) ) ) ) ( ( a food ) ( ( produces ( in ( the body ) ) ) . ) ) )
(ROOT (S (S (NP (DT A) (NNP -RRB-) (NNP A) (NN calorie)) (VP (VBZ is) (NP (NP (DT a) (NN unit)) (PP (IN of) (NP (NP (NN measure)) (VP (VBN used) (S (VP (TO to) (VP (VB express) (NP (NP (DT the) (NN amount)) (PP (IN of) (NP (NN energy))))))))))))) (NP (DT a) (NN food)) (VP (VBZ produces) (PP (IN in) (NP (DT the) (NN body)))) (. .)))
A) A calorie is a unit of measure used to express the amount of energy a food produces in the body.
(ROOT (S (NP (NP (DT Another) (NN unit)) (PP (IN of) (NP (NN energy))) (, ,) (VP (VBN used) (ADVP (RB widely)) (PP (IN in) (NP (NP (DT the) (NN health) (NNS professions)) (CC and) (NP (JJ everyday) (NN life))))) (, ,)) (VP (VBZ is) (ADJP (JJ calorie)) (PRN (-LRB- -LRB-) (NP (NN cal)) (-RRB- -RRB-))) (. ?)))