[{'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: Broadly speaking, there are two categories of information we collect: 1) information that we must have in order for you to use Spotify; and 2) information that we can use to provide additional features and improved experiences if you choose to share that information."}, {'role': 'assistant', 'content': 'This clause is unfair. The privacy practices mentioned are: Contact_1stParty, Contact_Address_Book_1stParty.'}]