<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://pop.h-cdn.co/assets/cm/15/05/640x450/54cac6e0ae5d4_-_sport-clays-02-0611-de.jpg>
<http://www.popularmechanics.com/adventure/outdoors/a6875/how-to-shoot-sporting-clays/>