Assertion: frog's lifespan | /r/HasProperty | 7 to 9 years
Facets:
value: typically
type: DEGREE
Source sentences:
text: The lifespan of a frog is typically 7 to 9 years, but frogs can easily be eaten by predators such as lizards, birds and snakes.
text: The average lifespan of the gray treefrog is 7 to 9 years.