<https://subarasiki.com/tag/%e3%83%88%e3%83%a9%e3%82%a4%ef%bc%86%e3%82%a8%e3%83%a9%e3%83%bc/>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://subarasiki.com/tag/%E3%83%88%E3%83%A9%E3%82%A4%EF%BC%86%E3%82%A8%E3%83%A9%E3%83%BC/>