<https://www.medaka-farm.com/post/\u30C1\u30E9\u30B7\u4ED5\u5206\u3051>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://www.medaka-farm.com/post/%E3%83%81%E3%83%A9%E3%82%B7%E4%BB%95%E5%88%86%E3%81%91>