<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://del.h-cdn.co/assets/cm/15/10/54f8ae8fca850_-_311a522e-d02a-4fde-8cd0-5174786a69fd.jpg>
<http://www.delish.com/cooking/a38538/homemade-ketchup/>