[{'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: Should any material changes be made to the ways in which we use personally identifiable information, ZeroFour will take commercially reasonable measures to notify you. We will also post the changes to our use of personally identifiable information on our site at least 30 days prior to a change."}, {'role': 'assistant', 'content': 'This clause is fair. The privacy practices mentioned are: nan.'}]