<https://www.lakimakana.com/post/\u304A\u9162\u306E\u30AA\u30B9\u30B9\u30E1>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://www.lakimakana.com/post/%E3%81%8A%E9%85%A2%E3%81%AE%E3%82%AA%E3%82%B9%E3%82%B9%E3%83%A1>