[{'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: back to top How Long We Keep Your Information How long we retain your information depends on why we collected it and how we use it. We will not retain your personal information for longer than is necessary for our business purposes or for legal requirements. For instance, we may retain some information for a few years after you have closed your account with us if this is necessary to meet our legal obligations or to exercise, defend or establish legal rights."}, {'role': 'assistant', 'content': 'This clause is fair. The privacy practices mentioned are: nan.'}]