Assertion: fluorine's use | /r/CapableOf | play active role
Facets:
value: since chlorofluorocarbons, such as dichlorodifluoromethane
type: OTHER
Source sentences:
text: Since chlorofluorocarbons, such as dichlorodifluoromethane, play an active role in the depletion of the ozone layer, their manufacture and use have been restricted, and refrigerants containing hydrofluorocarbons are now preferred.