<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://del.h-cdn.co/assets/cm/15/10/54f6423f3c4f9_-_california-veggie-sandwich-recipe-mslo0712-kc6es8-de.jpg>
<http://www.delish.com/entertaining/g170/picnic-sandwiches/>