<https://seitaiin-eda.com/blog/2765/attachment/6fecf173be3bbce7c6f5f70d6adb47eb_t/>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://seitaiin-eda.com/blog/2765/attachment/6fecf173be3bbce7c6f5f70d6adb47eb_t/>