<https://yuka.pixnet.net/blog/post/24167680-%5b%e6%b8%ac%e8%a9%a6%5d-%e6%a5%b5%e9%99%90%e8%89%b2%e5%b7%ae-high-box-%e8%a6%96%e8%a8%8a%e7%9b%92>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://yuka.pixnet.net/blog/post/24167680>