Assertion: world population | /r/CapableOf | reach a peak of about nine billion
Facets:
value: in the 21st century
type: TEMPORAL
Source sentences:
text: Walter Greiling projected in the 1950s that world population would reach a peak of about nine billion, in the 21st century, and then stop growing after a readjustment of the Third World and a sanitation of the tropics.