<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://ghk.h-cdn.co/assets/cm/15/11/980x1306/54fe2267c9954-1ghk-vegetarian-lessons-rainbow-produce-s2.jpg>
<http://www.goodhousekeeping.com/health/diet-nutrition/g828/healthy-vegetarian-tips/>