[{'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: Posting of Revised Privacy Policy. We will post any adjustments to the Privacy Policy on this web page, and the revised version will be effective when it is posted. If you are concerned about how your information is used, then bookmark this page and read this Privacy Policy periodically."}, {'role': 'assistant', 'content': 'This clause is fair. The privacy practices mentioned are: nan.'}]