<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://del.h-cdn.co/assets/cm/15/10/54f942005fff8_-_vegetables.jpg>
<http://www.delish.com/food/news/a38950/modern-vegetables-are-lower-in-nutrients-than-those-of-the-1950s/>