<https://www.cool-style.com.tw/wd2/archives/628686-%e9%83%b5%e5%b7%ae%e3%80%81%e7%8b%97%e8%b2%9d%e5%9c%a8%e4%bb%96%e8%ba%ab%e9%82%8a%e5%83%8f%e5%b0%8f%e5%bc%9f%ef%bc%81%e7%88%b5%e5%a3%ab%e5%82%b3%e5%a5%87%e3%80%8c%e9%8d%8b%e7%8e%8b%e3%80%8d-mark-eaton>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://www.cool-style.com.tw/wd2/archives/category/%E7%94%9F%E6%B4%BB/%E9%81%8B%E5%8B%95%E8%B3%BD%E4%BA%8B/page/331>