( ( ( ( ( Energy ( The ( units joule ) ) ) ( -LRB- ( j -RRB- ) ) ) and ) ( kilojoule ( -LRB- ( kJ -RRB- ) ) ) ) ( ( should ( be ( used exclusively ) ) ) . ) )
(ROOT (S (NP (NP (NP (NNP Energy) (NNP The) (NNS units) (NN joule)) (PRN (-LRB- -LRB-) (NP (NN j)) (-RRB- -RRB-))) (CC and) (NP (NP (NN kilojoule)) (PRN (-LRB- -LRB-) (NP (NN kJ)) (-RRB- -RRB-)))) (VP (MD should) (VP (VB be) (VP (VBN used) (ADVP (RB exclusively))))) (. .)))
Energy The units joule (j) and kilojoule (kJ) should be used exclusively.
(ROOT (S (NP (NNS Kilojoules)) (VP (VBP are) (ADVP (RB typically)) (VP (VBN used) (S (VP (TO to) (VP (VB measure) (NP (NP (NNP heats)) (PP (IN of) (NP (NN reaction))))))))) (. .)))