Assertion: tin | /r/ObjectUse | used by human
Facets:
value: since ancient times
type: TEMPORAL
value: for thousands of years
type: TEMPORAL
Source sentences:
text: Tin is a silvery-gray metallic element which has been used by humans for thousands of years.
text: Tin has been used by humans since ancient times, when compared to aluminum which was discovered quite late in human history.