<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://clv.h-cdn.co/assets/cm/15/08/54ea31d2cce31_-_tomatoes-farmf0305-de.jpg>
<http://www.countryliving.com/life/travel/a2371/organic-resource-guide-0908/>