<https://core.shiojiri.com/news/tag/%e3%82%a4%e3%83%99%e3%83%b3%e3%83%88/#breadcrumb>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://core.shiojiri.com/news/tag/%E3%82%A4%E3%83%99%E3%83%B3%E3%83%88/>