[{'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: We reserve the right to modify this Privacy Statement at any time. Your continued use of any portion of this application following notification or posting of such modifications will constitute your acceptance of such changes."}, {'role': 'assistant', 'content': 'This clause is fair. The privacy practices mentioned are: nan.'}]