<https://blog.m0shi-m0shi.com/tag/%e6%b5%9c%e7%94%b0%e9%9b%85%e5%8a%9f/#primaryimage>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://blog.m0shi-m0shi.com/tag/%E6%B5%9C%E7%94%B0%E9%9B%85%E5%8A%9F/>