[{'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: ZEN may display to you behaviorally targeted advertising. If you wish to "opt out" of certain targeted advertising, please visit http://www.youradchoices.com and/or www.networkadvertising.org. Please note that the links above may not reach all ZEN\'s advertising partners and certain behaviorally targeted advertising may still be displayed to you. If you want to be certain that no behaviorally targeted advertisements are displayed to you, please do not use or access the ZEN Services.'}, {'role': 'assistant', 'content': 'This clause is fair. The privacy practices mentioned are: nan.'}]