Assertion: african elephant's population | /r/HasProperty | declined by at least 50%
Facets:
value: to 1940s
type: TEMPORAL
value: since the 1930s
type: TEMPORAL
Source sentences:
text: Since 1986, the Asian elephant has been listed as Endangered on the IUCN Red List as the wild population has declined by at least 50% since the 1930s to 1940s, i.e. three elephant generations.