<https://support.wawaoffice.jp/faq/8044/attachment/%E6%89%BF%E8%AA%8D/#itempage>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://support.wawaoffice.jp/faq/8044/attachment/%E6%89%BF%E8%AA%8D/>