Assertion: penguin | /r/CapableOf | follow the process of preening
Facets:
value: for keeping their feathers
type: PURPOSE
Source sentences:
text: Penguins follow the process of preening for keeping their feathers in right condition; however, the feathers do turn out to be blanched and extra hard due to the 24 hours of continuous sunlight in more than 4 to 5 months in the summertime.