Assertion: polar bear's cub | /r/HasProperty | born at time
Facets:
value: usually
type: TEMPORAL
value: in january
type: TEMPORAL
value: singly
type: MANNER
value: in february
type: TEMPORAL
Source sentences:
text: Cubs are born singly or up to three at a time, generally in January or February, while the mother is still in hibernation.
text: Usually only one cub is born at a time but twins are possible.