[{'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: The distinction between these two categories is important. Information in the first category is information you must provide in order to use Spotify. When you agree to our Privacy Policy, you give us the right to collect this information and use it for the purposes described. Information in the second category is information we will only collect if you explicitly give us permission to do so in the future. For this second category of information, we will ask for your permission before first accessing it, we will describe how we will use it if you give us permission, we will only use the information for the purpose we described, and you will always have the ability to change your mind and revoke that permission. Acceptance of our Privacy Policy does not mean you have granted us permission to access or use information in the second category; we're just explaining to you that one day we might ask you for that permission."}, {'role': 'assistant', 'content': 'This clause is fair. The privacy practices mentioned are: nan.'}]