<https://margaret.tw/post-45651067/#breadcrumb>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://margaret.tw/tag/%E5%90%8D%E5%8F%A4%E5%B1%8B%E4%BE%86%E7%9A%84%E5%8D%A1%E5%B8%83%E9%87%8C%E7%82%B8%E9%9B%9E/>