Assertion: dolphin's sound | /r/HasProperty | pitched
Facets:
value: high
type: DEGREE
Source sentences:
text: Echolocation works when a dolphin bounces a high pitched sound off an object and then listens for the echo to come back.
text: Dolphins use a complex system of echolocation to navigate their surroundings and hunt their prey, bouncing high-pitched sounds off objects, and listening for the returning echoes.