Assertion: genus homo | /r/HasProperty | taken since the discovery of stone tools
Facets:
value: in olduvai gorge
type: LOCATION
value: to originate
type: TEMPORAL
value: in the 1960s
type: TEMPORAL
Source sentences:
text: The genus Homo has been taken to originate some two million years ago, since the discovery of stone tools in Olduvai Gorge, Tanzania, in the 1960s.