<https://mortex.watanabesakanten.com/2020/06/09/%e3%83%93%e3%83%bc%e3%83%ab%e3%82%b9%e3%83%88%e3%83%bc%e3%83%b3%e8%ac%9b%e7%bf%92%e4%bc%9a%e3%81%ae%e3%81%8a%e7%9f%a5%e3%82%89%e3%81%9b/#primaryimage>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://mortex.watanabesakanten.com/2020/06/09/%E3%83%93%E3%83%BC%E3%83%AB%E3%82%B9%E3%83%88%E3%83%BC%E3%83%B3%E8%AC%9B%E7%BF%92%E4%BC%9A%E3%81%AE%E3%81%8A%E7%9F%A5%E3%82%89%E3%81%9B/>