[{'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: Back to overview What changes have you recently made? We reserve the right to change this Privacy Policy at any time, and will indicate the date the Privacy Policy was most recently updated. If there have been significant changes, we will highlight any such changes, and will attempt to directly alert you when possible. We will also keep prior versions of this Privacy Policy in an archive for your review."}, {'role': 'assistant', 'content': 'This clause is fair. The privacy practices mentioned are: nan.'}]