( ( ( ( ( The calorie ) , ) ( which ( is ( 4.19 joules ) ) ) ) , ) ( ( ( is also ) ( often ( used ( as ( ( a unit ) ( of energy ) ) ) ) ) ) . ) )
(ROOT (S (NP (NP (DT The) (NN calorie)) (, ,) (SBAR (WHNP (WDT which)) (S (VP (VBZ is) (NP (CD 4.19) (NNS joules))))) (, ,)) (VP (VBZ is) (ADVP (RB also)) (VP (ADVP (RB often)) (VBN used) (PP (IN as) (NP (NP (DT a) (NN unit)) (PP (IN of) (NP (NN energy))))))) (. .)))
The calorie, which is 4.19 joules, is also often used as a unit of energy.
(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-))) (. ?)))