Assertion: black footed ferret | /r/Desires | prairie dogs
Facets:
value: for food
type: PURPOSE
value: for shelter
type: PURPOSE
value: for survival
type: PURPOSE
Source sentences:
text: They rely on prairie dogs for food and their burrows for shelter and raising young.
text: Black-footed ferrets depend on prairie dogs for survival.
text: Black-footed ferrets rely on prairie dogs for food and shelter.