[{'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: 3.3 Baidu Users shall not duplicate, copy, sell, resell or use for any other commercial purpose any part of this service or the use or obtain of this service."}, {'role': 'assistant', 'content': 'This clause is fair. The privacy practices mentioned are: nan.'}]