<https://luck-seitai.com/%e6%9c%aa%e5%88%86%e9%a1%9e/%e9%ba%ba%e5%b1%8b-%e3%81%86%e3%81%95%e3%81%8e-%e5%ae%bf%e9%99%a2/#articleImage>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://luck-seitai.com/%E6%9C%AA%E5%88%86%E9%A1%9E/%E9%BA%BA%E5%B1%8B-%E3%81%86%E3%81%95%E3%81%8E-%E5%AE%BF%E9%99%A2/>