<https://oc.zutuki.com/2030/12/30/%e9%a0%ad%e3%81%ae%e7%97%9b%e3%81%bf/#article>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://oc.zutuki.com/2030/12/30/%E9%A0%AD%E3%81%AE%E7%97%9B%E3%81%BF/?replytocom=1021>