<https://techcrunch.com/2011/04/21/amazon-ec2-goes-down-taking-with-it-reddit-foursquare-and-quora/>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://techcrunch.com/2011/04/21/amazon-ec2-goes-down-taking-with-it-reddit-foursquare-and-quora/>