<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://pop.h-cdn.co/assets/cm/15/05/480x360/54cb0beeefe60_-_giant-umbrellas-07-0413-de.jpg>
<http://www.popularmechanics.com/technology/gadgets/reviews/g1109/get-yourself-a-serious-umbrella/>