[{'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: Some web browsers and devices permit you to broadcast a preference that you not be "tracked" online. We do not currently modify your experience based upon whether such a signal is broadcast.'}, {'role': 'assistant', 'content': 'This clause is fair. The privacy practices mentioned are: nan.'}]