Assertion: rattle | /r/HasProperty | a warning device
Facets:
value: for predatory animals
type: TRANSITIVE-OBJECT
value: presumably
type: OTHER
Source sentences:
text: The rattle, presumably a warning device, is composed of horny, loosely connected hollow segments, one of which is added every time the snake sheds its skin.
text: The most widely accepted hypothesis for the evolution of the rattle is that the rattle is a warning device for predatory animals that might be a threat to the rattlesnake.