<https://www.sayorsing.com/single-post/\u5982\u4F55\u4E0D\u65B7\u6C23\u5531\u9673\u5955\u8FC5\u7684-\u4E00\u7D72\u4E0D\u639B>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://www.sayorsing.com/single-post/%E5%A6%82%E4%BD%95%E4%B8%8D%E6%96%B7%E6%B0%A3%E5%94%B1%E9%99%B3%E5%A5%95%E8%BF%85%E7%9A%84-%E4%B8%80%E7%B5%B2%E4%B8%8D%E6%8E%9B>