[{'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: Log Files We use IP addresses to analyse trends, administer the site, track user's movement, and gather broad demographic information for aggregate use. IP addresses are not linked to personally identifiable information."}, {'role': 'assistant', 'content': 'This clause is unfair. The privacy practices mentioned are: Identifier_IP_Address_1stParty.'}]