[{'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: V. Data Retention Policy, Managing Your Information We will retain Your information for as long as You use the Service and for a reasonable time thereafter. The length of time we retain information varies, depending on the purpose for which it was collected and the nature of the information. Please note that some or all of the information We have collected may be required in order for the Service to function properly."}, {'role': 'assistant', 'content': 'This clause is fair. The privacy practices mentioned are: nan.'}]