<https://kr.pinterest.com/seedesign0648/%E5%90%B9%E9%A3%8E%E6%9C%BA%E6%83%85%E7%BB%AA%E7%89%88/>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://kr.pinterest.com/seedesign0648/%E5%90%B9%E9%A3%8E%E6%9C%BA%E6%83%85%E7%BB%AA%E7%89%88/>