<https://specialist.hket.com/article/3081375/\u7784\u6E96\u5DE5\u696D4.0%20\u8077\u696D\u6559\u80B2\u6380\u9769\u547D>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://specialist.hket.com/article/3081375/%E7%9E%84%E6%BA%96%E5%B7%A5%E6%A5%AD4.0%20%E8%81%B7%E6%A5%AD%E6%95%99%E8%82%B2%E6%8E%80%E9%9D%A9%E5%91%BD?dis=pd&pdlist=srap002&mtc=70007>