<https://trendblog.jp/earn/%e5%89%af%e6%a5%ad%e3%81%a7%e7%a8%bc%e3%81%90%ef%bc%81>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://trendblog.jp/earn/%E5%89%AF%E6%A5%AD%E3%81%A7%E7%A8%BC%E3%81%90%EF%BC%81>