<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://cos.h-cdn.co/assets/cm/14/25/539fd7ff2f56a_-_cos-03-lifting-leg-exercise-md.jpg>
<http://www.cosmopolitan.com/health-fitness/advice/g3001/workout-moves-for-better-sex/>