<https://thekidshouldseethis.com/post/professor-shoelace-demonstrates-the-worlds-fastest-shoelace-knot#webpage>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://thekidshouldseethis.com/post/professor-shoelace-demonstrates-the-worlds-fastest-shoelace-knot>