( ( ( This process ) ( of ( determining ( ( the calorimeter ) constant ) ) ) ) ( ( is ( called ( ( the calibration ) ( of ( the calorimeter ) ) ) ) ) . ) )
(ROOT (S (NP (NP (DT This) (NN process)) (PP (IN of) (S (VP (VBG determining) (S (NP (DT the) (NN calorimeter)) (ADJP (JJ constant))))))) (VP (VBZ is) (VP (VBN called) (NP (NP (DT the) (NN calibration)) (PP (IN of) (NP (DT the) (NN calorimeter)))))) (. .)))
This process of determining the calorimeter constant is called the calibration of the calorimeter.
(ROOT (S (NP (DT A) (NN calorimeter)) (VP (VBZ is) (NP (NP (DT a) (NN device)) (VP (VBN used) (S (VP (TO to) (VP (VB measure) (NP (NN temperature) (NNS changes)) (PP (IN during) (NP (NP (NN chemical) (NNS processes)) (VP (VBN called)))))))))) (. .)))