Assertion: bear's mother | /r/CapableOf | leave the den
Facets:
value: for three to four hours
type: TEMPORAL
value: for the first time
type: TEMPORAL
Source sentences:
text: It is only at that time when mother and cubs will leave the den for the first time.
text: For three to four hours, the mother may leave the den to feed, which leaves the cub defenseless.
text: When the frigid land starts to thaw, the mother and cubs finally leave the den to go out and explore.