<https://tricolore.love/2021/09/05/%e9%9d%a2%e8%ab%87%e3%81%ab%e3%81%a4%e3%81%84%e3%81%a6/>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://tricolore.love/2021/09/05/%E9%9D%A2%E8%AB%87%E3%81%AB%E3%81%A4%E3%81%84%E3%81%A6/>