[{'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: If you want to delete your Account, you can do so from your Account Settings page or by emailing us and providing proof of authority over the Account. What constitutes "proof of authority" will vary depending on the circumstances, but generally will require sufficient identifying information so that we can be confident you are the Account owner. Deleting your Account may not fully remove the content you have published from our systems, as caching of, backups of, copies of, or references to your Account Information may not be immediately removed. In addition, given the nature of sharing on the Services, some of the public activity on your Account prior to deletion (such as reblogs of your blog posts) may remain stored on our servers and accessible to the public.'}, {'role': 'assistant', 'content': 'This clause is unfair. The privacy practices mentioned are: Contact_E_Mail_Address_1stParty.'}]