<https://taizo.space/2020/08/30/hst-%e3%83%8f%e3%83%83%e3%83%96%e3%83%ab%e5%ae%87%e5%ae%99%e6%9c%9b%e9%81%a0%e9%8f%a1%e6%9c%88%e9%9d%a2%e9%80%9a%e9%81%8e/>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://taizo.space/2020/08/30/hst-%E3%83%8F%E3%83%83%E3%83%96%E3%83%AB%E5%AE%87%E5%AE%99%E6%9C%9B%E9%81%A0%E9%8F%A1%E6%9C%88%E9%9D%A2%E9%80%9A%E9%81%8E/>