Assertion: calcium carbide | /r/ObjectUse | used as source of acetylene gas
Facets:
value: sometimes
type: TEMPORAL
value: in the ripening of fruit
type: TEMPORAL
Source sentences:
text: Calcium carbide is sometimes used as source of acetylene gas, which is a ripening agent similar to ethylene.
text: In the ripening of fruit, calcium carbide is sometimes used as source of acetylene gas, which is a ripening agent similar to ethylene.