<https://hometateru.com/tag/%e6%b3%a8%e6%96%87%e4%bd%8f%e5%ae%85-%e5%a4%b1%e6%95%97%e8%ab%87-%e5%be%8c%e6%82%94-%e4%ba%8b%e4%be%8b>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://hometateru.com/tag/%E6%B3%A8%E6%96%87%E4%BD%8F%E5%AE%85-%E5%A4%B1%E6%95%97%E8%AB%87-%E5%BE%8C%E6%82%94-%E4%BA%8B%E4%BE%8B>