[{'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: I. YOUR FEEDBACK We welcome your input regarding our Privacy Policy and any comments on the services we provide to you. You may send us your comments and responses by post to: The Legal Department, Alibaba.com Hong Kong Limited, 26/F, Tower One, Times Square, 1 Matheson Street, Causeway Bay, Hong Kong."}, {'role': 'assistant', 'content': 'This clause is fair. The privacy practices mentioned are: nan.'}]