<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://del.h-cdn.co/assets/cm/15/10/54f6597d09da3_-_02-woman-glass-milk-s2.jpg>
<http://www.delish.com/cooking/nutrition/g816/foods-help-sleep-wdy0314/>