<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://del.h-cdn.co/assets/cm/15/10/54f6537967a59_-_thomas-jefferson-sweet-potato-pudding-del1110-xl.jpg>
<http://www.delish.com/holiday-recipes/thanksgiving/g622/sweet-potato-recipes/>