<https://harmonycenter.or.jp/mizumoto/%e4%ba%8c%e4%ba%ba%e3%81%aa%e3%82%89/>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://harmonycenter.or.jp/mizumoto/%e4%ba%8c%e4%ba%ba%e3%81%aa%e3%82%89/>