<https://jam-school.net/#listItem>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://jam-school.net/%E5%86%AC%E6%9C%9F%E8%AC%9B%E7%BF%92%E4%B8%AD%E3%81%AE%E4%B8%80%E3%82%B3%E3%83%9E%EF%BC%88%EF%BC%92%EF%BC%89%E3%80%80%E6%AD%A3%E6%9C%88%E7%89%B9%E8%A8%93/>