[{'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: Changes to this privacy statement We may update this privacy statement from time to time. Check the "last updated" section at the top of this privacy statement to see the last time the privacy statement was changed.'}, {'role': 'assistant', 'content': 'This clause is fair. The privacy practices mentioned are: nan.'}]