<https://anshin-keikaku19.com/%e7%81%ab%e7%81%bd%e4%bf%9d%e9%99%ba/2865/#article>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://anshin-keikaku19.com/%E7%81%AB%E7%81%BD%E4%BF%9D%E9%99%BA/2865/>