[{'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: Changes to this Policy We may update this Privacy Policy to reflect changes to our information practices. If we make any material changes we will notify users by means of a notice on our website prior to the change becoming effective. We encourage you to periodically review this page for the latest information on our privacy practices."}, {'role': 'assistant', 'content': 'This clause is fair. The privacy practices mentioned are: nan.'}]