Assertion: sodium nitrate | /r/HasProperty | important part
Facets:
value: formerly
type: TEMPORAL
value: in this way
type: MANNER
value: for the production of nitric acid
type: PURPOSE
value: in the production
type: LOCATION
Source sentences:
text: In this way, it is an important part in the production of:
text: It was formerly an important raw material for the production of nitric acid.