<http://midori-fu.com/author/mf-mp1222/#author>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<http://midori-fu.com/blog/%E2%99%AA%E3%82%AC%E3%83%83%E3%83%84%E3%83%9D%E3%83%BC%E3%82%BA%E3%81%AE%E6%97%A5%E2%99%AA/>