<https://www.wax-hug.com/single-post/\u521D\u3081\u3066\u306E\u30C7\u30EA\u30B1\u30FC\u30C8\u30BE\u30FC\u30F3\u30B1\u30A2>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://www.wax-hug.com/single-post/%E5%88%9D%E3%82%81%E3%81%A6%E3%81%AE%E3%83%87%E3%83%AA%E3%82%B1%E3%83%BC%E3%83%88%E3%82%BE%E3%83%BC%E3%83%B3%E3%82%B1%E3%82%A2>