( ( ( ( Ultrasound ( Sound waves ) ) ( of ( high frequencies ) ) ) ( above ( ( the range ) ( of hearing ) ) ) ) . )
(ROOT (NP (NP (JJ Ultrasound) (JJ Sound) (NNS waves)) (PP (IN of) (NP (JJ high) (NNS frequencies))) (PP (IN above) (NP (NP (DT the) (NN range)) (PP (IN of) (NP (NN hearing))))) (. .)))
Ultrasound Sound waves of high frequencies above the range of hearing.
(ROOT (S (NP (PRP You)) (VP (VBP call) (NP (NP (NN sound)) (SBAR (WHNP (WDT that)) (S (VP (VBZ has) (S (NP (DT a) (NN wave) (NN frequency)) (ADJP (JJR higher) (SBAR (IN than) (S (NP (DT the) (JJ human) (NN ear)) (VP (MD can) (VP (VB detect) (NP (NN ultrasound))))))))))))) (. .)))