[{'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: Revoking Permissions. If you change your mind about our ongoing ability to collect information from certain sources that you have already consented to, such as your phonebook or location services, you can simply revoke your consent by changing the settings on your device if your device offers those options. Of course, if you do that, certain services may lose full functionality."}, {'role': 'assistant', 'content': 'This clause is unfair. The privacy practices mentioned are: Contact_Address_Book_1stParty, Location_1stParty.'}]