<https://mono-coco.com/maruyama/archives/tag/%E3%83%A2%E3%83%8E%E3%82%B3%E3%82%B3/#breadcrumblist>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://mono-coco.com/maruyama/archives/tag/%E3%83%A2%E3%83%8E%E3%82%B3%E3%82%B3>