<https://vivlib.work/%e3%82%b7%e3%83%a3%e3%83%84%e8%a3%be%e3%81%ae%e4%b8%89%e3%81%a4%e5%b7%bb%e3%82%a2%e3%82%a4%e3%83%ad%e3%83%b3/#breadcrumb>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://vivlib.work/%E3%82%B7%E3%83%A3%E3%83%84%E8%A3%BE%E3%81%AE%E4%B8%89%E3%81%A4%E5%B7%BB%E3%82%A2%E3%82%A4%E3%83%AD%E3%83%B3/>