Assertion: potash | /r/HasProperty | discovered in the process
Facets:
Source sentences:
text: In 1943, potash was discovered in Saskatchewan, Canada, in the process of drilling for oil.
text: In 1943, potash was discovered in Saskatchewan, Canada, in the process of drilling for oil.
text: In 1943, potash was discovered in Saskatchewan, Canada, in the process of drilling for oil.