Assertion: mountain gorilla | /r/HasAspect | offspring
Facets:
value: at a time
type: TEMPORAL
Source sentences:
text: Female mountain gorillas give birth for the first time at about the age of 10 years old and will have offspring every four years or more.
text: The mountain Gorilla bear one offspring at a time, however, they sometimes give birth to twins (which is very rare) after the gestation period of 8.5 months.