[{'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 retain your personal information as long as it is necessary and relevant for our operations. In addition, we may retain personal information from closed accounts to comply with national laws, prevent fraud, collect any fees owed, resolve disputes, troubleshoot problems, assist with any investigation, enforce our User Agreement and take other actions permitted or required by applicable national laws."}, {'role': 'assistant', 'content': 'This clause is fair. The privacy practices mentioned are: nan.'}]