<https://upcyclecando.com/%ec%bb%a4%eb%ae%a4%eb%8b%88%ed%8b%b0/%ea%b3%b5%ec%a7%80%ec%82%ac%ed%95%ad/>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://upcyclecando.com/%EC%BB%A4%EB%AE%A4%EB%8B%88%ED%8B%B0/%EA%B3%B5%EC%A7%80%EC%82%AC%ED%95%AD/>