( ( Decibel ( The decibel ) ) ( ( is ( ( the unit ) ( of ( measurement ( of ( sound intensity ) ) ) ) ) ) . ) )
(ROOT (S (NP (JJ Decibel) (DT The) (NN decibel)) (VP (VBZ is) (NP (NP (DT the) (NN unit)) (PP (IN of) (NP (NP (NN measurement)) (PP (IN of) (NP (JJ sound) (NN intensity))))))) (. .)))
Decibel The decibel is the unit of measurement of sound intensity.
(ROOT (S (NP (NNP Decibel)) (VP (VBZ is) (NP (NP (DT the) (NN term)) (VP (VBN used) (S (VP (TO to) (VP (VB measure) (NP (NP (DT the) (NN intensity)) (PP (IN of) (NP (JJ sound) (NNS waves)))))))))) (. .)))