Assertion: bismuth | /r/HasProperty | known since ancient times
Facets:
Source sentences:
text: Because Bismuth has been known since ancient times, no one person is credited with its discovery.
text: But surprisingly there is little evidence that it was known to the ancients.
text: Known since ancient times, bismuth is a brittle pinkish-white metal that was long confused with lead, tin and zinc.
text: Known since ancient times, Bismuth has been used to ease transition and encourages a calm acceptance of change.
text: But surprisingly there is little evidence that it was known to the ancients.