Assertion: cockatiel | /r/CapableOf | emit low squeak
Facets:
value: to show its pleasure
type: PURPOSE
Source sentences:
text: A cockatiel that wishes to be petted will often lower its head or nibble at the owner's fingers to indicate that it wishes to have its head and neck scratched (two places it can't easily scratch on its own), and will emit a low squeak to show its pleasure.