<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://del.h-cdn.co/assets/cm/15/10/54f64f8a7cbe7_-_t-bone-tostadas-fw0610-xl-24022755.jpg>
<http://www.delish.com/cooking/g486/summer-mexican-recipes/>