<https://mylife4b07.pixnet.net/blog/post/209699929-victoria-%e5%90%8a%e5%b8%b6%e8%b2%bc%e8%a2%8bbf%e8%a4%b2-%e5%a5%b3-%e4%b8%ad%e6%b7%b1%e8%97%8d%e3%80%90%e8%b6%85%e5%96%9c%e6%ad%a1%e3%80%91>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://mylife4b07.pixnet.net/blog/post/209699929>