<https://jijiokagesama.com/%e3%83%9f%e3%83%a9%e3%83%bc%e3%83%aa%e3%83%b3%e3%82%b0/>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://jijiokagesama.com/%E3%83%9F%E3%83%A9%E3%83%BC%E3%83%AA%E3%83%B3%E3%82%B0/>