<https://chokyo-keiba.net/#organization>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://chokyo-keiba.net/2012/2012-%E4%B8%83%E5%A4%95%E8%B3%9E%EF%BC%86%E3%83%97%E3%83%AD%E3%82%AD%E3%82%AA%E3%83%B3%E3%82%B9%E3%83%86%E3%83%BC%E3%82%AF%E3%82%B9/>