Assertion: methane's use | /r/CapableOf | contribute to emissions of f-gases
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Source sentences:
text: Fossil fuel combustion also generates N O. Fluorinated gases (F-gases): Industrial processes, refrigeration, and the use of a variety of consumer products contribute to emissions of F-gases, which include hydrofluorocarbons (HFCs), perfluorocarbons (PFCs), and sulfur hexafluoride (SF 6 ).