<https://www.himatsubushinews.com/tag/%e3%82%aa%e3%83%bc%e3%83%ab%e3%82%a4%e3%83%b3%e3%83%af%e3%83%b3%e5%8c%96%e7%b2%a7%e5%93%81>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://www.himatsubushinews.com/tag/%E3%82%AA%E3%83%BC%E3%83%AB%E3%82%A4%E3%83%B3%E3%83%AF%E3%83%B3%E5%8C%96%E7%B2%A7%E5%93%81>