<https://literaryblog.net/documentary-blog/watch-cloud-coaster-roller-coaster-by-extreme-engineering-iaapa-2016>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://literaryblog.net/documentary-blog/watch-cloud-coaster-roller-coaster-by-extreme-engineering-iaapa-2016>