<https://rickey.academy/#articleImage>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://rickey.academy/2021/04/30/%E3%81%93%E3%82%93%E3%81%AA%E3%81%A8%E3%81%8D%E3%81%A9%E3%81%86%E3%81%99%E3%82%8B%EF%BC%9F/>