<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://ghk.h-cdn.co/assets/cm/15/11/480x360/54feec7bc9c94-ghk-joseph-joseph-triscale-lgn.jpg>
<http://www.goodhousekeeping.com/cooking-tools/g347/problem-solving-gadgets/>