( ( A ( vibrating string ) ) ( ( vibrates ( with ( ( a set ) ( of ( frequencies ( that ( depend ( on ( ( the ( string 's ) ) tension ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (DT A) (JJ vibrating) (NN string)) (VP (VBZ vibrates) (PP (IN with) (NP (NP (DT a) (NN set)) (PP (IN of) (NP (NP (NNS frequencies)) (SBAR (WHNP (WDT that)) (S (VP (VBP depend) (PP (IN on) (NP (NP (DT the) (NN string) (POS 's)) (NN tension))))))))))) (. .)))
A vibrating string vibrates with a set of frequencies that depend on the string's tension.
(ROOT (S (NP (JJ Stringed) (NNS instruments)) (VP (MD can) (VP (VB help) (VP (VB show) (NP (NP (DT the) (NN relationship)) (PP (IN between) (NP (NN tension) (CC and) (NNS frequencies)))) (PP (IN in) (NP (NNS strings)))))) (. .)))