Assertion: otter's fur | /r/CapableOf | trap air
Facets:
value: usually
type: DEGREE
value: to keep it
type: PURPOSE
Source sentences:
text: Close to their skin there is a thick layer of fur that traps air.
text: It is covered with short fur that usually traps air to keep it warm.
text: Small mammals that can't carry around a lot of blubber, but still need to maintain warmth, have a very specialized fur that traps air when they dive underwater," Hosoi says in the demo video.
text: It is covered with short fur that usually traps air to keep it warm.