<https://www.kanacotakahashi.com/post/\u3044\u3044\u5929\u6C17\uFF01>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://www.kanacotakahashi.com/post/%E3%81%84%E3%81%84%E5%A4%A9%E6%B0%97%EF%BC%81>