Assertion: silicon carbide's form | /r/HasProperty | natural
Facets:
Source sentences:
text: It wasn’t until 14 years later that silicon carbide was first discovered in its natural form.
text: In 1905, silicon carbide was observed in its natural form by the Nobel-prize-winning chemist Henri Moissan in Diablo Canyon, Arizona.
text: It wasn’t until 14 years later that silicon carbide was first discovered in its natural form.
text: Silicon carbide is unusual because it was discovered synthetically before its natural form was unearthed.