<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://pop.h-cdn.co/assets/cm/15/06/480x360/54cfd553bd370_-_golf-science-07-0713-lgn.jpg>
<http://www.popularmechanics.com/adventure/outdoors/g1241/the-science-of-the-perfect-golf-shot/>