<https://ctwa.org.tw/2019/10/1080819%e6%95%99%e7%b7%b4%e5%a7%94%e5%93%a1%e6%9c%83%e8%ad%b0%e7%b4%80%e9%8c%84/#blogposting>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://ctwa.org.tw/2019/10/1080819%E6%95%99%E7%B7%B4%E5%A7%94%E5%93%A1%E6%9C%83%E8%AD%B0%E7%B4%80%E9%8C%84/>