<https://aomori-soil.jp/post-160/%e3%82%b9%e3%83%a9%e3%82%a4%e3%83%891-4/#itempage>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://aomori-soil.jp/post-160/%E3%82%B9%E3%83%A9%E3%82%A4%E3%83%891-4/>