<https://www.dailynk.com/category/%eb%89%b4%ec%8a%a4/%ec%a0%95%ec%b9%98-%ec%99%b8%ea%b5%90/>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://www.dailynk.com/%E6%97%A5-%EB%8C%80%EB%B6%81%ED%98%91%EC%83%81-%ED%96%89%EB%8F%99%E5%B0%8D%ED%96%89%EB%8F%99%E5%8C%97-%E6%97%A5%EB%8C%80%EA%B2%B0%EC%A0%95/>