( ( ( The speed ) ( of sound ) ) ( ( depends ( on ( ( the properties ) ( of ( ( the medium ) ( ( through which ) ( ( the wave ) travels ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NP (DT The) (NN speed)) (PP (IN of) (NP (NN sound)))) (VP (VBZ depends) (PP (IN on) (NP (NP (DT the) (NNS properties)) (PP (IN of) (NP (NP (DT the) (NN medium)) (SBAR (WHPP (IN through) (WHNP (WDT which))) (S (NP (DT the) (NN wave)) (VP (VBZ travels))))))))) (. .)))
The speed of sound depends on the properties of the medium through which the wave travels.
(ROOT (S (NP (NP (DT The) (NN speed)) (PP (IN of) (NP (NN sound)))) (VP (VBZ depends) (PP (IN on) (NP (NN medium)))) (. .)))
The speed of sound depends on medium.