Assertion: calcium oxide | /r/ObjectUse | used for this purpose
Facets:
value: most commonly
type: DEGREE
value: often
type: TEMPORAL
value: in the form of lime
type: OTHER
Source sentences:
text: Calcium oxide, in the form of lime, was often used for this purpose, since it could react with the carbon dioxide and sulfur dioxide produced during roasting and smelting to keep them out of the working environment.
text: Calcium oxide is also known as lime and is most commonly used for many purposes.