( ( ( ( ( ( Strictly speaking ) ( , ( we ( should ( use ( ( ( the ( System Internationale ) ) ( -LRB- ( SI -RRB- ) ) ) ( units ( of kiloJoules ) ) ) ) ) ) ) ) , ) but ) ( ( in ( this country ) ) ( we ( tend ( to ( use kilocalories ) ) ) ) ) ) . )
(ROOT (S (S (S (ADVP (RB Strictly)) (VP (VBG speaking))) (, ,) (NP (PRP we)) (VP (MD should) (VP (VB use) (S (NP (NP (DT the) (NNP System) (NNP Internationale)) (PRN (-LRB- -LRB-) (NP (NNP SI)) (-RRB- -RRB-))) (NP (NP (NNS units)) (PP (IN of) (NP (NNS kiloJoules)))))))) (, ,) (CC but) (S (PP (IN in) (NP (DT this) (NN country))) (NP (PRP we)) (VP (VBP tend) (S (VP (TO to) (VP (VB use) (NP (NNS kilocalories))))))) (. .)))
Strictly speaking, we should use the System Internationale (SI) units of kiloJoules, but in this country we tend to use kilocalories.
(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))))))))) (. .)))