Assertion: wolf | /r/CapableOf | use their tails
Facets:
value: to help keep them
type: PURPOSE
value: in the winter time
type: TEMPORAL
value: to communicate with each other
type: PURPOSE
Source sentences:
text: Wolves use their tails to communicate with each other.
text: The wolf uses its tail in the winter time to help keep them warm.
text: Wolves use their tails to communicate.