[{'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: A cookie is a piece of information that an Internet web site sends to your browser when you access information at that site. Cookies are either stored in memory (session cookies) or placed on your hard disk (persistent cookies). The Metro Web site does not use persistent cookies. Upon closing your browser the session cookie set by this web site is destroyed and no Personal Information is maintained which might identify you should you visit our web site at a later date."}, {'role': 'assistant', 'content': 'This clause is unfair. The privacy practices mentioned are: Identifier_Cookie_or_similar_Tech_1stParty.'}]