[{'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: Replacement Guarantee : The Replacement Guarantee seeks to assist Buyers who have been defrauded by qualified Sellers on the App. If at the time of delivery and/or within specified days from the date of delivery of the product/s, if any defect is found, then the buyer of the product/s can ask for replacement of the product/s from the Seller."}, {'role': 'assistant', 'content': 'This clause is fair. The privacy practices mentioned are: nan.'}]