[{'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: Do Not Track Policy California law requires that operators of websites and online services disclose how they respond to a Do Not Track signal and whether other third parties may collect personally identifiable information about an individual's online activities from their site or service."}, {'role': 'assistant', 'content': 'This clause is fair. The privacy practices mentioned are: nan.'}]