<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://ctw.h-cdn.co/assets/16/35/640x320/landscape-1472630996-lwmkk-cp-red-crab.jpg>
<http://www.cosmopolitan.com.tw/lifestyle/hot-topics/news/a2838/canton-pot-crab-pot/>