<https://kazuweb.com/blog/205/attachment/%e6%b3%a1%e7%99%bd%e6%b9%af/#authorImage>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://kazuweb.com/blog/205/attachment/%E6%B3%A1%E7%99%BD%E6%B9%AF/>