Assertion: potassium nitrate | /r/HasProperty | rare item
Facets:
value: in the process of food preservation
type: OTHER
Source sentences:
text: Potassium Nitrate is a rare item in LifeAfter game, which is used as a material to craft plastic.
text: Among all these resources, potassium nitrate is the item that is rare and hard to get.
text: In the process of food preservation, potassium nitrate is a rare ingredient of salted meat, but there are theories indicating that using nitrates in meats can cause cancer.
text: Potassium Nitrate is a rare item in LifeAfter game, which is used as a material to craft plastic.