[{'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: If your information changes, let us know so that we can update our records. If you would like us to de-activate your records that we hold, please tell us. Once de-activated your data will not be accessible. However, due to system backups to various types of data storage media, your data may in some circumstances remain on these types of data storage media. There may be circumstances where we decline to de-activate your records."}, {'role': 'assistant', 'content': 'This clause is fair. The privacy practices mentioned are: nan.'}]