Assertion: gold | /r/HasProperty | known to man
Facets:
value: since antiquity
type: TEMPORAL
value: since about 5,500 years
type: TEMPORAL
Source sentences:
text: What formed this association is not known, because gold has been known to man since antiquity or about 5,500 years.
text: Ever since gold has been known to man, 165,000 tons of it has been mined.