Assertion: king penguin's feather | /r/CapableOf | form thick layer of insulation
Facets:
value: to keep the penguins
type: PURPOSE
Source sentences:
text: The inner three layers consist of down feathers, which form a thick layer of insulation to keep the penguins warm.
text: The inner three layers consist of down feathers, which form a thick layer of insulation to keep the penguins warm.