<https://kmn-dtr.com/%e6%84%9b%e3%81%95%e3%82%8c%e3%81%a640%e5%b9%b4%e3%80%80%ef%bd%90%e3%81%86%e3%81%be%e3%81%84%e6%a3%92>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://kmn-dtr.com/%E6%84%9B%E3%81%95%E3%82%8C%E3%81%A640%E5%B9%B4%E3%80%80%EF%BD%90%E3%81%86%E3%81%BE%E3%81%84%E6%A3%92>