[{'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: Notification of Changes We reserve the right at our discretion to make changes to this Privacy Policy. You may review updates to our Privacy Policy at any time via links on our website. You agree to accept electronic communications and/or postings of a revised Privacy Policy on the Tango website, and you agree that such electronic communications or postings constitute notice to you of the Privacy Policy."}, {'role': 'assistant', 'content': 'This clause is fair. The privacy practices mentioned are: nan.'}]