<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://rbk.h-cdn.co/assets/cm/14/51/480x720/548fe8a10fbb1_-_rbk-fitness-apps-zombies-run-s2.jpg>
<http://www.redbookmag.com/body/health-fitness/advice/g1439/fitness-apps/?link=rel&dom=yah_ca&src=syn&con=blog_redbook&mag=rbk>