[{'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: For any products for which a refund is to be given, the refund will be processed once the returned product has been received by the seller. Original Products Cash on Delivery Free & Easy Returns 100% Buyer Protection"}, {'role': 'assistant', 'content': 'This clause is fair. The privacy practices mentioned are: nan.'}]