[{'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 change the provisions of this Policy at any time. We will alert you that changes have been made by indicating on the Policy the date it was revised. We encourage you to review this Policy from time to time to make sure that you understand how any personal information you provide will be used. Your continued use of the Services following the posting of changes to these terms will mean you accept those changes."}, {'role': 'assistant', 'content': 'This clause is fair. The privacy practices mentioned are: nan.'}]