<https://genmusu.com>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://genmusu.com/blogs/recipe/%E7%8E%84%E7%B1%B3%E3%81%8A%E3%82%80%E3%81%99%E3%81%B3-%E3%83%97%E3%83%AC%E3%83%BC%E3%83%B3-%E8%B2%9D%E6%9F%B1%E3%82%BF%E3%83%9E%E3%82%B4%E3%81%A8%E3%81%98%E3%81%8C%E3%81%91>