[{'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: Baidu Campus No. 10, Shangdi 10th Street Haidian District Beijing, 100085 5.2 If any content in the open access areas of the Baidu website is uploaded by users through a Baidu service (including but not limited to Baidu Post Bar, Baidu Knows, MP3, film and television, etc), users agree that Baidu has the free, permanent, irrevocable, nonexclusive and complete sub-license right and permission across the world, such as to use, duplicate, modify, adapt, publish, translate, create derivative works, spread, perform and display these contents (the whole or parts), and/or incorporate these content into any other forms of work, media or technology currently known or later developed."}, {'role': 'assistant', 'content': 'This clause is fair. The privacy practices mentioned are: nan.'}]