Assertion: bald eagle | /r/CapableOf | become mature
Facets:
value: sexually
type: MANNER
value: at five to six years
type: TEMPORAL
Source sentences:
text: Adult plumage develops when a bald eagle become sexually mature; it takes five years for a bald eagle to attain solid white head and tail feathers.
text: Bald eagles become sexually mature at four to five years of age.
text: As mentioned earlier bald eagles become mature after four to five years.
text: Bald eagles become sexually mature at five to six years with maturity usually corresponding to when their head and tail feathers become white.