<https://www.terra-chofu.com/single-post/2016/03/05/\u8ABF\u5E03\u99C5\u524D\u3072\u308D\u3070\u30A4\u30D9\u30F3\u30C8\u51FA\u5E973\u67086\u65E5>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://www.terra-chofu.com/single-post/2016/03/05/%E8%AA%BF%E5%B8%83%E9%A7%85%E5%89%8D%E3%81%B2%E3%82%8D%E3%81%B0%E3%82%A4%E3%83%99%E3%83%B3%E3%83%88%E5%87%BA%E5%BA%973%E6%9C%886%E6%97%A5>