Assertion: arctic fox's food | /r/HasProperty | extra
Facets:
Source sentences:
text: In the summer months when food is plentiful, they will hide extra food under rocks to sustain them in the winter.
text: In the summer, the arctic fox carries extra food to its den and stores it under rocks to eat later.
text: In the summer, if food is plentiful, the arctic fox carries extra food to its den and caching it in a crevice or under rocks, or by making its own freezer by digging a hole in the permafrost and storing its food there.