_:n5b1f44adc15f4413b7548063c111de2cxb0
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://dartslove.hatenablog.com/entry/2016/08/29/%E7%A2%BA%E7%8E%87%E3%81%A3%E3%81%A6%E3%80%82%E3%80%82%E3%80%82>