( ( Ultrasonics Ultrasound ) ( ( is ( ( high ( frequency sound ) ) ( that ( is ( inaudible ( to ( the ( human ear ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NNP Ultrasonics) (NNP Ultrasound)) (VP (VBZ is) (NP (NP (JJ high) (NN frequency) (NN sound)) (SBAR (WHNP (WDT that)) (S (VP (VBZ is) (ADJP (JJ inaudible) (PP (TO to) (NP (DT the) (JJ human) (NN ear))))))))) (. .)))
Ultrasonics Ultrasound is high frequency sound that is inaudible to the human ear.
(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))))))))))))) (. .)))