_:nac96aab258df49c6aa7b1a50d390e508xb2
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://confusingtimes.tistory.com/category/%EB%8B%A4%EC%96%91%ED%95%9C%20%EC%98%81%EC%96%B4%20%ED%91%9C%ED%98%84>