<https://www.kusatsu-cocoriva.jp/post/2018/02/16/324\u571F\u6625\u4F11\u307F\u30AD\u30C3\u30BA\u30D5\u30A7\u30B9\u30C6\u30A3\u30D0\u30EB-\u958B\u50AC\uFF01>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://www.kusatsu-cocoriva.jp/post/2018/02/16/324%E5%9C%9F%E6%98%A5%E4%BC%91%E3%81%BF%E3%82%AD%E3%83%83%E3%82%BA%E3%83%95%E3%82%A7%E3%82%B9%E3%83%86%E3%82%A3%E3%83%90%E3%83%AB-%E9%96%8B%E5%82%AC%EF%BC%81>