Assertion: male gorilla | /r/HasProperty | about 12 years of age
Facets:
value: typically
type: DEGREE
Source sentences:
text: Adult male gorillas are called silverbacks because they have a saddle-shaped patch of silver hair on their backs after they are about 12 years of age.
text: A silverback is an adult male gorilla, typically more than 12 years of age and named for the distinctive patch of silver hair on his back.