[{'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: Analysis of device information using internal information collection tools Information Possession and Duration of Use JP Brothers destroys users' information on principal once the purpose of information collection has been reached. However, should there be a need to preserve information unidentified with personal information, according to internal policy or related legislative regulation, it may be stored for a certain amount of time."}, {'role': 'assistant', 'content': 'This clause is fair. The privacy practices mentioned are: nan.'}]