<https://hiroestyle.com/2019/06/24/>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://hiroestyle.com/2019/06/24/%E3%81%82%E3%81%84%E3%81%A5%E3%81%A1%E3%83%99%E3%82%B9%E3%83%88%EF%BC%93%E3%82%92%E4%BD%BF%E3%81%84%E3%81%93%E3%81%AA%E3%81%9B%EF%BC%81/>