Assertion: emperor penguin | /r/CapableOf | sleep under condition
Facets:
value: for 20 or more hours
type: TEMPORAL
Source sentences:
text: They use less energy when asleep which they do so as long as possible, it is not unusual for emperor penguins to sleep for 20 or more hours a day under these conditions – even up to 24 hours a day, to conserve their food supplies and increase their chick’s chances of survival.