<https://c7skates.com/blogs/c7-blog/roller-skate-101-welcome-to-the-wonderful-world-of-roller-skating>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://c7skates.com/blogs/c7-blog/roller-skate-101-welcome-to-the-wonderful-world-of-roller-skating>