<https://fortuberwiki.blog/starfield-%e5%88%9d%e5%bf%83%e8%80%85-%e3%81%8a%e3%81%99%e3%81%99%e3%82%81-%e4%be%bf%e5%88%a9mod-%e8%a7%a3%e8%aa%ac/>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://fortuberwiki.blog/starfield-%E5%88%9D%E5%BF%83%E8%80%85-%E3%81%8A%E3%81%99%E3%81%99%E3%82%81-%E4%BE%BF%E5%88%A9mod-%E8%A7%A3%E8%AA%AC/>