( ( ( A ( vibrating drum ) ) ( in ( a disco ) ) ) ( ( ( transfers energy ) ( to ( ( the room ) ( as sound ) ) ) ) . ) )
(ROOT (S (NP (NP (DT A) (JJ vibrating) (NN drum)) (PP (IN in) (NP (DT a) (NN disco)))) (VP (VBZ transfers) (NP (NN energy)) (PP (TO to) (NP (NP (DT the) (NN room)) (PP (IN as) (NP (NN sound)))))) (. .)))
A vibrating drum in a disco transfers energy to the room as sound.
(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)))))))))))) (. .)))