Assertion: fox's den | /r/HasProperty | underground
Facets:
value: in hollow trees
type: LOCATION
value: usually
type: DEGREE
Source sentences:
text: Their dens are also underground and often the tunnels that they made end with their den.
text: Usually the den is an underground burrow, a crevice in a rocky outcrop, or a cavity under some boulders.
text: —fennec foxes live in underground dens.
text: It sleeps in the underground den during the day and hunts during the night when temperature drops for "few" degrees.
text: In the winter months, many fox have to create dens that are underground.
text: 6) Foxes dig underground dens where they take care of their kits and hide from predators
text: Foxes dig underground dens, where they hide from the predators and take care of their babies.
text: Dens can be underground or above ground, even in hollow trees or in the branches of dense trees.
text: Gray foxes seldom build underground dens; instead they use a hollow log or tree, a rock crevice, a wood or brush pile, or the space beneath outbuildings.