[{'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 Policy effective immediately following posting of the modified version on the Site. Your use of our Services following posting will constitute your acceptance of the modified version. IF YOU DO NOT ACCEPT THE TERMS OF THIS PRIVACY POLICY, PLEASE DO NOT USE THE SERVICES."}, {'role': 'assistant', 'content': 'This clause is fair. The privacy practices mentioned are: nan.'}]