<https://app.ninchanese.com/word/91965/\u4E2D\u534E\u822A\u7A7A\u516C\u53F8>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://app.ninchanese.com/word/91965/%E4%B8%AD%E5%8D%8E%E8%88%AA%E7%A9%BA%E5%85%AC%E5%8F%B8>