<https://nasewing.com/%e7%84%a1%e6%96%99%e5%9e%8b%e7%b4%99%e4%b8%80%e8%a6%a7>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://nasewing.com/%E7%84%A1%E6%96%99%E5%9E%8B%E7%B4%99%E4%B8%80%E8%A6%A7>