Assertion: orangutan's orangutan | /r/HasAspect | estimated decline
Facets:
value: in population of over 80 percent
type: OTHER
value: over the last 75 years
type: TEMPORAL
Source sentences:
text: The Sumatran orangutan has had an estimated decline in population of over 80 percent over the last 75 years, while the Bornean orangutan has had a population decline of well over 50 percent during the last 60 years.