<https://hotsale.pixnet.net/blog/post/28732089-%e5%85%a8%e5%ae%b6%e8%b6%85%e5%95%86%e5%a4%a9%e5%a4%a9%e6%96%b0%e9%ae%ae%e9%85%8d-%282011-6-14-27%29>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://hotsale.pixnet.net/blog/post/28732089-%E5%85%A8%E5%AE%B6%E8%B6%85%E5%95%86%E5%A4%A9%E5%A4%A9%E6%96%B0%E9%AE%AE%E9%85%8D-%282011-6-14-27%29>