[{'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: (2) If you prefer, you can send paper mail to AVAST Software s.r.o., Pikrtova 1737/1a, 140 00 Prague 4, Czech Republic. Be sure to write "Attention: PRIVACY" in the address so we know where to direct your correspondence.'}, {'role': 'assistant', 'content': 'This clause is fair. The privacy practices mentioned are: nan.'}]