Assertion: opossum's baby | /r/HasProperty | mature
Facets:
value: by the time
type: TEMPORAL
Source sentences:
text: Possum babies start off super small, but grow quickly and are mature and on their own by the time they are about 4 months old.
text: If the baby is immature, when you call, ask if they have the time to raising the really small ones or just put them down.