Assertion: caribou's ground | /r/HasProperty | frozen
Facets:
value: too hard
type: MANNER
value: always
type: DEGREE
Source sentences:
text: The ground in these Arctic areas is always frozen making it impossible for them to dig traditional dens.
text: Arctic wolves may give birth in a den dug into the ground or snow where this is possible, though it is not always the case if the ground is frozen too hard.
text: Stay on established trails and go later in the year after the ground is frozen to prevent further habitat loss from off-road travel.