[{'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: Profile information is used by Duolingo to be presented back to and edited by you when you access the Service and to be presented to other users. In some cases, other users may be able to supplement your profile, including by submitting comments (which can be deleted by you)."}, {'role': 'assistant', 'content': 'This clause is fair. The privacy practices mentioned are: nan.'}]