<https://www.shimizu-bc.info/single-post/2019/10/16/\u30CD\u30C3\u30C8\u3067\u3082\u6700\u5B89\u5024\uFF1F\u65E5\u672C\u30D6\u30E9\u30F3\u30C9\u306E\u96FB\u52D5\u8ECA>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://www.shimizu-bc.info/single-post/2019/10/16/%E3%83%8D%E3%83%83%E3%83%88%E3%81%A7%E3%82%82%E6%9C%80%E5%AE%89%E5%80%A4%EF%BC%9F%E6%97%A5%E6%9C%AC%E3%83%96%E3%83%A9%E3%83%B3%E3%83%89%E3%81%AE%E9%9B%BB%E5%8B%95%E8%BB%8A>