<https://seika-dou.com>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://seika-dou.com/blogs/%E3%81%8A%E7%9F%A5%E3%82%89%E3%81%9B/%E9%8A%80%E5%BA%A7%E6%9C%AC%E5%BA%97-%E6%96%B0%E4%BD%9C%E3%81%AE%E5%95%86%E5%93%81%E3%81%8C%E5%85%A5%E8%8D%B7%E3%81%84%E3%81%9F%E3%81%97%E3%81%BE%E3%81%97%E3%81%9F>