[{'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: If, however, we provide you with more specific purpose(s) of use either at the time we ask you to provide your personal information or through other means, then such notice will take precedence over the general purposes of use stated in Section 4.a of this Privacy Policy."}, {'role': 'assistant', 'content': 'This clause is fair. The privacy practices mentioned are: nan.'}]