<https://girlswalker.com/archives/239926/%E2%91%A3%E7%89%9B%E3%82%82%E3%81%A4%E9%8D%8B%EF%BC%9A600%E5%86%86/>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://girlswalker.com/archives/239926/%E2%91%A3%E7%89%9B%E3%82%82%E3%81%A4%E9%8D%8B%EF%BC%9A600%E5%86%86/>