Assertion: mountain gorilla's hair | /r/CapableOf | become white
Facets:
value: in color
type: OTHER
Source sentences:
text: Male gorillas become silverbacks around the age of 13, when the hair across their shoulders and down their back becomes grayish or white in color.
text: When the gorilla gets older, the hair on the saddle of the back becomes white, much like the gray hair of elderly people.