<https://simplecampwithdogs.com/archives/%e3%80%90%e3%83%a1%e3%83%ab%e3%82%ab%e3%83%aa%e3%80%91%e8%b6%85%e4%be%bf%e5%88%a9%ef%bc%81%e9%85%8d%e9%80%81%e6%96%b9%e6%b3%95%e6%97%a9%e3%82%8f%e3%81%8b%e3%82%8a%e8%a1%a8%e3%82%92%e3%83%80%e3%82%a6.html>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://simplecampwithdogs.com/archives/%E3%80%90%E3%83%A1%E3%83%AB%E3%82%AB%E3%83%AA%E3%80%91%E8%B6%85%E4%BE%BF%E5%88%A9%EF%BC%81%E9%85%8D%E9%80%81%E6%96%B9%E6%B3%95%E6%97%A9%E3%82%8F%E3%81%8B%E3%82%8A%E8%A1%A8%E3%82%92%E3%83%80%E3%82%A6.html>