<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://mac.h-cdn.co/assets/cm/14/49/547d13a5a66d3_-_rb-step-up-with-shoulder-press-1-0809-lgn.jpg>
<http://www.marieclaire.com/health-fitness/news/a1043/power-up-exercises/>