Assertion: snake | /r/CapableOf | use their rattles
Facets:
value: as a warning signal
type: PURPOSE
value: to warn potential aggressors
type: PURPOSE
Source sentences:
text: These snakes use their rattles as a warning signal.
text: The snake uses the rattle to warn potential aggressors to back off or to distract prey.
text: These snakes use their rattles as a warning signal.