Assertion: king penguin's layer | /r/HasProperty | oiled unlike the feathering of a duck
Facets:
Source sentences:
text: The outer layer of feathers are oiled and waterproof, not unlike the feathering of a duck.
text: The outer layer of feathers are oiled and waterproof, not unlike the feathering of a duck.
text: The outer layer of feathers are oiled and waterproof, not unlike the feathering of a duck.
text: The outer layer of feathers are oiled and waterproof, unlike the feathering of a duck, which reduces the amount of water absorbed that would otherwise increase their weight.