Assertion: cougar's lifespan | /r/HasProperty | 20 years
Facets:
value: in captivity
type: LOCATION
Source sentences:
text: Expected cougar lifespan is 8 to 10 years in the wild, and 20 years in captivity.
text: Here, the average lifespan is about 20 years, but one cat died just short of its 30th birthday.
text: On the other hand, the lifespan of tigers is known to be more than twenty years in captivity.