_:nb9713ed9998d454fb4239988a836a0eaxb3
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://ko.wikipedia.org/wiki/%EB%A7%88%EC%9D%B4%EC%95%A0%EB%AF%B8%EC%97%90%EC%84%9C%EC%9D%98_%ED%95%98%EB%A3%BB%EB%B0%A4>