<https://hall-judge.jp/#website>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://hall-judge.jp/schedule/%E5%B7%9D%E5%8F%A3%E5%B8%82122%E5%8F%B7%E7%B7%9A%E6%B2%BF%E3%81%84%E3%81%AE%E3%81%8A%E5%BA%97-2/>