<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://ghk.h-cdn.co/assets/cm/15/12/5508ee11b30bf-1011-packaged-chicken-with-ghk-food-safety-label-xl.jpg>
<http://www.goodhousekeeping.com/health/diet-nutrition/a18876/how-to-keep-food-safe/?src=shelter_footer>