<https://jinbaflyfishing.com/2020/08/20/%e3%82%ab%e3%83%95%e3%82%a7%e3%82%a4%e3%83%b3%e3%83%ac%e3%82%b9%e3%82%b3%e3%83%bc%e3%83%92%e3%83%bc-%e8%b6%85%e8%87%a8%e7%95%8c/>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://jinbaflyfishing.com/2020/08/20/%E3%82%AB%E3%83%95%E3%82%A7%E3%82%A4%E3%83%B3%E3%83%AC%E3%82%B9%E3%82%B3%E3%83%BC%E3%83%92%E3%83%BC-%E8%B6%85%E8%87%A8%E7%95%8C/>