[{'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: Another available tool is the Network Advertising Initiative's (NAI) Opt-Out Tool at networkadvertising.org/choices. This allows you to opt out from the use of information about your online activities for online behavioral advertising by NAI member companies."}, {'role': 'assistant', 'content': 'This clause is fair. The privacy practices mentioned are: nan.'}]