( ( Sound waves ) ( ( ( are vibrations ) ( transmitted ( through matter ) ) ) . ) )
(ROOT (S (NP (JJ Sound) (NNS waves)) (VP (VBP are) (ADVP (RB vibrations)) (VP (VBN transmitted) (PP (IN through) (NP (NN matter))))) (. .)))
Sound waves are vibrations transmitted through matter.
(ROOT (S (PP (IN In) (NP (NN science))) (, ,) (NP (NN sound)) (VP (VBZ is) (VP (VBN defined) (PP (IN as) (NP (NP (DT the) (NN transfer)) (PP (IN of) (NP (NN energy))))) (PP (IN from) (NP (NP (DT a) (JJ vibrating) (NN object)) (PP (IN in) (NP (NP (NNS waves)) (SBAR (WHNP (WDT that)) (S (VP (VBP travel) (PP (IN through) (NP (NN matter)))))))))))) (. .)))