<https://code-pay.info/archives/tag/%E3%83%A4%E3%83%95%E3%82%AA%E3%82%AF#breadcrumblist>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://code-pay.info/archives/tag/%E3%83%A4%E3%83%95%E3%82%AA%E3%82%AF>