<https://support.wawaoffice.jp/faq/7034/attachment/%e5%96%b6%e6%a5%ad1-2/#itempage>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://support.wawaoffice.jp/faq/7034/attachment/%E5%96%B6%E6%A5%AD1-2/>