<https://yukiko37.com/%e5%86%99%e7%b5%8c%e3%81%ab%e3%81%a4%e3%81%84%e3%81%a6/#breadcrumblist>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://yukiko37.com/%E5%86%99%E7%B5%8C%E3%81%AB%E3%81%A4%E3%81%84%E3%81%A6/>