[{'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: You may also opt-out of additional third-party advertising networks by going to the Network Advertising Initiative's website at www.networkadvertising.org and following the directions."}, {'role': 'assistant', 'content': 'This clause is fair. The privacy practices mentioned are: nan.'}]