<https://bbs47.net/hokkaido/%e5%8c%97%e6%b5%b7%e9%81%93%e8%8c%85%e9%83%a8%e9%83%a1%e6%a3%ae%e7%94%ba>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<http://schema.org/WebPage>
<https://bbs47.net/hokkaido/%E5%8C%97%E6%B5%B7%E9%81%93%E8%8C%85%E9%83%A8%E9%83%A1%E6%A3%AE%E7%94%BA>