[{'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: Cookies: As noted above, you may also opt-out of BlackBerry's use of Cookies through one of the following methods: Change your browser settings to refuse Cookies or to indicate when a Cookie is being sent. Remove or block browser Cookies using the settings in your browser, but that may impact your ability to use certain BlackBerry Offerings as they may not work well or at all with Cookies disabled. Opt-out directly from certain performance Cookies at http://metrics.blackberry.com/optout.html."}, {'role': 'assistant', 'content': 'This clause is unfair. The privacy practices mentioned are: Identifier_Cookie_or_similar_Tech_1stParty.'}]