<https://juku-will.net/2022/03/18/2022%e5%b9%b4%e5%90%88%e6%a0%bc%e5%ae%9f%e7%b8%be/>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://juku-will.net/2022/03/18/2022%E5%B9%B4%E5%90%88%E6%A0%BC%E5%AE%9F%E7%B8%BE/>