<https://studio-miki.com/news/10%e6%9c%8810%e6%97%a5%e5%9c%9f%e6%9b%9c%e6%97%a5%e3%81%ae%e3%83%ac%e3%83%83%e3%82%b9%e3%83%b3/>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://studio-miki.com/news/10%E6%9C%8810%E6%97%A5%E5%9C%9F%E6%9B%9C%E6%97%A5%E3%81%AE%E3%83%AC%E3%83%83%E3%82%B9%E3%83%B3/>