<https://steachs.com/archives/tag/%e5%be%ae%e8%bb%9f%e7%84%a1%e7%b7%9a%e8%a1%8c%e5%8b%95%e6%bb%91%e9%bc%a03500#listItem>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://steachs.com/archives/tag/%E5%BE%AE%E8%BB%9F%E7%84%A1%E7%B7%9A%E8%A1%8C%E5%8B%95%E6%BB%91%E9%BC%A03500>