Assertion: caribou's hair | /r/CapableOf | trap air
Facets:
Source sentences:
text: They have really cool hair that traps air
text: The hollow shafts allow the hairs to trap air, which provides the cozy insulation to keep the animals warm in a frigid environment.
text: The caribou's fur is made up of hollow hairs, which trap air and keep the animals very warm.