<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://del.h-cdn.co/assets/cm/15/10/54f66be54ef5b_-_potato-salad-with-celery-and-herbs-kxa6ph-uvjini-xl.jpg>
<http://www.delish.com/entertaining/g2360/potato-salad-recipes/>