[{'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: top 5. BlackBerry's processing of your personal information a) Retention BlackBerry retains personal information as long as necessary for the fulfillment of BlackBerry's identified purposes or as otherwise necessary to comply with applicable laws. When personal information is no longer necessary or relevant for BlackBerry's identified purposes, or required by applicable laws, BlackBerry will take steps to have it deleted, destroyed, erased, aggregated or made anonymous. Consistent with good business practice, BlackBerry continues to evolve our controls, schedules and practices for information and records retention and destruction which apply to your personal information."}, {'role': 'assistant', 'content': 'This clause is fair. The privacy practices mentioned are: nan.'}]