A moment later, the clear, high-pitched sound of the whistle could be heard over the Rabbi's final shofar blast.
( ( ( A moment ) later ) ( , ( ( ( the ( clear ( , ( high-pitched sound ) ) ) ) ( of ( the whistle ) ) ) ( ( could ( be ( heard ( over ( ( the ( Rabbi 's ) ) ( final ( shofar blast ) ) ) ) ) ) ) . ) ) ) )
(ROOT (S (ADVP (NP (DT A) (NN moment)) (RB later)) (, ,) (NP (NP (DT the) (JJ clear) (, ,) (JJ high-pitched) (NN sound)) (PP (IN of) (NP (DT the) (NN whistle)))) (VP (MD could) (VP (VB be) (VP (VBN heard) (PP (IN over) (NP (NP (DT the) (NNP Rabbi) (POS 's)) (JJ final) (NN shofar) (NN blast)))))) (. .)))
The sound of the whistle could be heard over the blast.
( ( ( The sound ) ( of ( the whistle ) ) ) ( ( could ( be ( heard ( over ( the blast ) ) ) ) ) . ) )
(ROOT (S (NP (NP (DT The) (NN sound)) (PP (IN of) (NP (DT the) (NN whistle)))) (VP (MD could) (VP (VB be) (VP (VBN heard) (PP (IN over) (NP (DT the) (NN blast)))))) (. .)))