Assertion: puffin's feather | /r/HasProperty | waterproof
Facets:
Source sentences:
text: Puffins are covered in waterproof feathers, allowing them to spend most of their time in the water.
text: They have waterproofed feathers, the ability to drink salt water and catch food.
text: Their feathers are waterproof, meaning they allow them to stay warm as they float along the sea’s surface or while diving under water.
text: The feathers are waterproof, which allows the birds to spend long periods in water.