[{'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: 12. Changes to the Policy We reserve the right to change this Policy at any time. If we decide to change this Policy, we will post those changes on this page and update the date at the top of the page. The changes will be effective when posted. Please check this page on a regular basis so that you remain aware of what information we collect and how we use it."}, {'role': 'assistant', 'content': 'This clause is fair. The privacy practices mentioned are: nan.'}]