<https://mixsora.net/2024/02/23/%e4%b8%80%e5%8c%ba%e5%88%87%e3%82%8a%e3%81%ae%e3%80%8c%e9%b0%bb%e3%80%8d/>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://mixsora.net/2024/02/23/%E4%B8%80%E5%8C%BA%E5%88%87%E3%82%8A%E3%81%AE%E3%80%8C%E9%B0%BB%E3%80%8D/>