Assertion: porcupine | /r/CapableOf | shake its tail quills
Facets:
value: usually
type: TEMPORAL
value: to create a rattling sound
type: PURPOSE
Source sentences:
text: The porcupine shakes its tail quills to create a rattling sound as a threatening distraction to predators.
text: When threatened by a predator, the porcupine usually shakes its tail quills, which are hollow and sound like a rattle; if this doesn’t scare the enemy away, the porcupine charges backwards, trying to stab the predator with its back quills.