<https://kingetsumami.com/2022/08/25/%e5%a4%a7%e5%88%87%e3%81%aa%e4%bb%b2%e9%96%93/>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://kingetsumami.com/2022/08/25/%E5%A4%A7%E5%88%87%E3%81%AA%E4%BB%B2%E9%96%93/>