[{'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: When we post changes to this privacy statement, we will include the date when the statement was last updated. If we significantly change this statement or how we use your personal information, we will notify you either by prominently posting a notice prior to implementing the change or by sending you a notification directly. We encourage you to respect review this statement periodically."}, {'role': 'assistant', 'content': 'This clause is fair. The privacy practices mentioned are: nan.'}]