[{'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: We try to maintain our services in a manner that protects information from accidental or malicious destruction. Because of this, please note that when you delete information, we may not immediately delete residual copies from our active servers and may also retain information in our backup systems."}, {'role': 'assistant', 'content': 'This clause is fair. The privacy practices mentioned are: nan.'}]