Assertion: owl monkey | /r/CapableOf | assume nocturnal role
Facets:
value: from diurnal ancestors
type: OTHER
value: based on their wide geographical distribution
type: CAUSE
Source sentences:
text: Despite these obstacles, the fossil record proves that owl monkeys assumed this nocturnal role from diurnal ancestors and, based on their wide geographical distribution, have been successful in exploiting this niche.