<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://del.h-cdn.co/assets/cm/15/10/54f64241417ec_-_ef-tenderloin-sandwiches-herb-mayonnaise-recipe-mslo0812-xl.jpg>
<http://www.delish.com/entertaining/g170/picnic-sandwiches/>