<https://shin-ei-travel.jp/2021/09/27/%e5%90%84%e7%a4%be%e5%95%86%e5%93%81%e3%81%ae%e7%b4%b9%e4%bb%8b/>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://shin-ei-travel.jp/2021/09/27/%E5%90%84%E7%A4%BE%E5%95%86%E5%93%81%E3%81%AE%E7%B4%B9%E4%BB%8B/>