<https://jslta.com/#organization>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://jslta.com/blog/%E9%81%B8%E3%81%B0%E3%82%8C%E3%82%8B%E3%81%AB%E3%81%AF%E7%90%86%E7%94%B1%E3%81%8C%E3%81%82%E3%82%8B/>