Assertion: arsenic | /r/AtLocation | bronze
Facets:
value: during the bronze age
type: TEMPORAL
value: often
type: TEMPORAL
Source sentences:
text: During the Bronze Age, arsenic was often included in bronze, which made the alloy harder (so-called "arsenical bronze").
text: During the Bronze Age , arsenic was often included in bronze , which made the alloy harder (so-called " arsenical bronze ").