<https://toyoura-feel.com/2020toyoura-nhf/18%e5%9b%9e%e3%81%be%e3%82%8b%e3%81%93%e3%82%99%e3%81%a8%e3%83%81%e3%83%a9%e3%82%b7%e8%a1%a8%e9%9d%a2-2/#itempage>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://toyoura-feel.com/2020toyoura-nhf/18%E5%9B%9E%E3%81%BE%E3%82%8B%E3%81%93%E3%82%99%E3%81%A8%E3%83%81%E3%83%A9%E3%82%B7%E8%A1%A8%E9%9D%A2-2/>