<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://del.h-cdn.co/assets/cm/15/10/160x160/54f6b3b219ef7_-_national-mustard-museum-mustard-tins-del0711-lg-97420645.jpg>
<http://www.delish.com/food/g1594/food-museums-exhibits/>