<https://myself-juku.jp/2016/08/26/%e7%94%9f%e5%be%92%e3%81%ae%e5%a3%b0/#breadcrumblist>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://myself-juku.jp/2016/08/26/%E7%94%9F%E5%BE%92%E3%81%AE%E5%A3%B0/>