[{'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: Note there are various levels of cookie enablement and disablement in Opera. For more information on other cookie settings offered in Opera, refer to the following page from Opera Software: http://www.opera.com/help/tutorials/security/privacy/"}, {'role': 'assistant', 'content': 'This clause is fair. The privacy practices mentioned are: nan.'}]