[{'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: 12. SPECIAL NOTE ABOUT CHILDREN'S PRIVACY ZEN does not knowingly collect personal information from children under 13 years of age. If ZEN learns that ZEN has inadvertently gathered personal data from children under 13 years of age, ZEN will take reasonable measures to promptly delete such personal data from ZEN's records."}, {'role': 'assistant', 'content': 'This clause is fair. The privacy practices mentioned are: nan.'}]