<https://hotsale.pixnet.net/blog/post/28326507-%e8%82%8c%e8%86%9a%e4%b9%8b%e9%91%b02011%e5%b9%b4%e6%af%8d%e8%a6%aa%e7%af%80%e7%89%b9%e6%83%a0%e7%b5%84>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://hotsale.pixnet.net/blog/post/28326507-%E8%82%8C%E8%86%9A%E4%B9%8B%E9%91%B02011%E5%B9%B4%E6%AF%8D%E8%A6%AA%E7%AF%80%E7%89%B9%E6%83%A0%E7%B5%84>