Assertion: koala | /r/CapableOf | limit sleep
Facets:
Source sentences:
text: Because they get so little energy from their diet, koalas must limit their energy use and sleep or rest 20 hours a day; They are predominantly active at night and spend most of their waking hours feeding.
text: Because they get so little energy from their diet, koalas must limit their energy use and sleep or rest 20 hours a day; only 4 hours a day are spent in active movement.