Assertion: polar bear | /r/AtLocation | den
Facets:
value: until mid-february
type: TEMPORAL
value: to mid-april
type: TEMPORAL
value: with the cubs
type: OTHER
value: at a time
type: TEMPORAL
value: to prevent attacks
type: PURPOSE
value: with their mother
type: OTHER
value: for months
type: TEMPORAL
Source sentences:
text: Only pregnant polar bears stay in a den for months at a time to protect, give birth, and nurse their cubs.
text: Baby polar bears are called cubs, and they live in the den with their mother.
text: Baby polar bears stay near their den to prevent attacks from predators.
text: The mother polar bear remains inside the den with the cubs until mid-February to mid-April.