Assertion: penguin's feather | /r/HasProperty | waterproof
Facets:
Source sentences:
text: First, African penguins have waterproof feathers which not only helps them swim swiftly through the water, but the feathers also insulate the penguins in cold waters.
text: African penguins have two ways to adapt to hot and cold temperatures: (1) their waterproof feathers help them swim swiftly and insulate them when in cold water, and (2) the pink glands above their eyes keep them cool in hot temperatures.
text: They condense this process to just a few weeks because they must fast during this time—they can’t hunt without their waterproof feathers.
text: The feathers are waterproof and windproof also.
text: They condense this process to just a few weeks because they must fast during this time—they can’t hunt without their waterproof feathers.