[{'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 can also opt-out of receiving marketing advertisements from third party advertisers and ad networks who are members of the Network Advertising Initiative or who follow the Digital Advertising Alliance's Self-Regulatory Principles for Online Behavioral Advertising by visiting the opt-out pages on their websites."}, {'role': 'assistant', 'content': 'This clause is fair. The privacy practices mentioned are: nan.'}]