[{'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: sm <640 phone md 641 < 1024 tablet lg 1025 < 1440 desktop x-lg 1440 < 1920 x-large xx-lg > 1920 xx-large"}, {'role': 'assistant', 'content': 'This clause is fair. The privacy practices mentioned are: nan.'}]