[{'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: ZeroFour reserves the right to modify its website and/or this Privacy Policy at any time and users who continue to use and access the ZeroFour Sites following modifications are deemed to be apprised of and bound by any such modifications."}, {'role': 'assistant', 'content': 'This clause is fair. The privacy practices mentioned are: nan.'}]