[{'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 do not knowingly contact or collect information from children under 13 without the permission of their parent/guardians. If you believe that we have inadvertently collected such information, please contact us so we can promptly obtain parental/guardian consent or delete the information."}, {'role': 'assistant', 'content': 'This clause is fair. The privacy practices mentioned are: nan.'}]