[{'role': 'user', 'content': "Analyze the following clause from a privacy policy and determine if it's fair or unfair. Also identify any privacy practices mentioned: Ads. Advertising associations offer methods (http://www.aboutads.info/choices/ and http://www.networkadvertising.org/choices/) by which you may be able to opt out of receiving behavioral advertising."}, {'role': 'assistant', 'content': 'This clause is fair. The privacy practices mentioned are: nan.'}]