[{'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: Event logs include timestamps, region codes (country and city), and non-identifying attributes including sponsor ID (determined by which Psiphon client build is used), client version, and protocol type. Page views are aggregated by time and/or session before being logged."}, {'role': 'assistant', 'content': 'This clause is unfair. The privacy practices mentioned are: Contact_City_1stParty.'}]