<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://del.h-cdn.co/assets/cm/15/10/54f64240c56a0_-_ey-sandwich-ricotta-red-peppers-arugula-recipe-mslo0710-mdn.jpg>
<http://www.delish.com/entertaining/g170/picnic-sandwiches/>