<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://rbk.h-cdn.co/assets/cm/14/50/980x980/5489fc8a5611d_-_rbk-burn-calories-1113-5-s2.jpg>
<http://www.redbookmag.com/body/health-fitness/advice/g685/kelly-osbourne-piloxing-workout/>