Assertion: dog whistle | /r/CapableOf | emit sound
Facets:
value: in the ultrasonic range
type: OTHER
Source sentences:
text: A dog whistle (also known as silent whistle or Galton's whistle) is a type of whistle that emits sound in the ultrasonic range, which humans cannot hear but some other animals can, including dogs and domestic cats, and is used in their training.