Assertion: fox's cub | /r/HasProperty | born at the start of summer
Facets:
value: usually
type: TEMPORAL
Source sentences:
text: After a gestation period of a couple of months, the female Arctic fox gives birth to up to 15 cubs which are born at the start of summer and after being nursed by their mother, are fairly independent by the time the Arctic winter starts again.
text: The gestation period is only a couple of months and the cubs are usually born at the start of the summer.