<https://blog.ulifestyle.com.hk/article/kearnecheung/4144230/\u808C\u5E95\u6DB2\u55BA\u4E5C-\u7528\u5B8C\u808C\u5E95\u6DB2\u4EF2\u4F7F\u5514\u4F7F\u7528\u7CBE\u83EF\u6DB2>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://blog.ulifestyle.com.hk/article/kearnecheung/4144230/%E8%82%8C%E5%BA%95%E6%B6%B2%E5%96%BA%E4%B9%9C-%E7%94%A8%E5%AE%8C%E8%82%8C%E5%BA%95%E6%B6%B2%E4%BB%B2%E4%BD%BF%E5%94%94%E4%BD%BF%E7%94%A8%E7%B2%BE%E8%8F%AF%E6%B6%B2>