<https://agera-honpokaraageya.com/info/%e4%b9%85%e5%96%9c%e9%9d%92%e8%91%89%e5%ba%97%e3%80%80%e8%87%a8%e6%99%82%e4%bc%91%e6%a5%ad%e3%81%ae%e3%81%8a%e7%9f%a5%e3%82%89%e3%81%9b-3/#blogposting>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://agera-honpokaraageya.com/info/%E4%B9%85%E5%96%9C%E9%9D%92%E8%91%89%E5%BA%97%E3%80%80%E8%87%A8%E6%99%82%E4%BC%91%E6%A5%AD%E3%81%AE%E3%81%8A%E7%9F%A5%E3%82%89%E3%81%9B-3/>