Assertion: bronze | /r/AtLocation | use
Facets:
value: for time
type: TEMPORAL
value: before iron
type: TEMPORAL
value: before bronze
type: TEMPORAL
value: before copper
type: TEMPORAL
Source sentences:
text: Iron and bronze are two metals that have been in use for time immemorial.
text: Bronze is already in use at this time.
text: He offers literary proof that bronze had been in use before iron and copper before bronze.