<https://ecomama-okazaki.com/2021/05/16/post-436/d73d2339-bb41-4e6b-98a9-a4cb4c260709/>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://ecomama-okazaki.com/2021/05/16/post-436/d73d2339-bb41-4e6b-98a9-a4cb4c260709/>