Assertion: american bison's coat | /r/HasProperty | thick
Facets:
value: in order to keep them
type: PURPOSE
value: extremely
type: DEGREE
Source sentences:
text: Their coat is extremely thick in order to keep them warm in cooler temperatures and in the summer months they shed to keep cool.
text: It has a multi-layered coat, a thick tail and furry paws to keep the cold out.