<https://recycleshop-osmworks.com/2021/03/20/%e3%82%aa%e3%83%b3%e3%83%a9%e3%82%a4%e3%83%b3%e3%82%b7%e3%83%a7%e3%83%83%e3%83%97%e3%82%82%e3%82%84%e3%81%a3%e3%81%a6%e3%81%be%e3%81%99%e3%80%82/#listItem>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://recycleshop-osmworks.com/2021/03/20/%E3%82%AA%E3%83%B3%E3%83%A9%E3%82%A4%E3%83%B3%E3%82%B7%E3%83%A7%E3%83%83%E3%83%97%E3%82%82%E3%82%84%E3%81%A3%E3%81%A6%E3%81%BE%E3%81%99%E3%80%82/>