[{'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 Our Privacy Policy If we change our privacy policies and procedures, we will post those changes on our website to keep you aware of what information we collect, how we use it and under what circumstances we may disclose it. Changes to this Privacy Policy are effective when they are posted on this page."}, {'role': 'assistant', 'content': 'This clause is fair. The privacy practices mentioned are: nan.'}]