<https://help.vivaldi.com/ja/#/schema/Person/5444c252662d1be873a80e486d85debc>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<http://schema.org/Person>
<https://help.vivaldi.com/ja/desktop-ja/privacy-ja/warnings-about-unsafe-websites/>