( Sound ( ( is ( ( ( a form ) ( of energy ) ) ( that ( travels ( in ( ( the form ) ( of ( a ( longitudinal wave ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NNP Sound)) (VP (VBZ is) (NP (NP (DT a) (NN form)) (PP (IN of) (NP (NN energy))) (SBAR (WHNP (WDT that)) (S (VP (VBZ travels) (PP (IN in) (NP (NP (DT the) (NN form)) (PP (IN of) (NP (DT a) (JJ longitudinal) (NN wave)))))))))) (. .)))
Sound is a form of energy that travels in the form of a longitudinal wave .
(ROOT (S (NP (JJ Sound) (NN energy)) (VP (VBZ travels) (PP (IN through) (NP (NP (NN matter)) (PP (IN in) (NP (NN wave) (NN form)))))) (. .)))