_:n52aa2346bf504f918db61967c602f0abxb1
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://tsukuba-daigaku.com/blog/%E3%80%90%E7%B4%B9%E4%BB%8B%E3%80%91%E5%92%8C%E5%AE%8F%E6%A0%AA%E5%BC%8F%E4%BC%9A%E7%A4%BE>