( ( ( The intensity ) ( of sound ) ) ( ( is ( measured ( in ( decibels ( -LRB- ( ( ( reflects differences ) ( in ( sound energy ) ) ) -RRB- ) ) ) ) ) ) . ) )
(ROOT (S (NP (NP (DT The) (NN intensity)) (PP (IN of) (NP (NN sound)))) (VP (VBZ is) (VP (VBN measured) (PP (IN in) (NP (NP (NNS decibels)) (PRN (-LRB- -LRB-) (VP (VBZ reflects) (NP (NNS differences)) (PP (IN in) (NP (JJ sound) (NN energy)))) (-RRB- -RRB-)))))) (. .)))
The intensity of sound is measured in decibels (reflects differences in sound energy).
(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)))))))))) (. .)))