<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://rbk.h-cdn.co/assets/cm/14/50/480x640/548a24851c6a3_-_pushup_move_3_1110-msc.jpg>
<http://www.redbookmag.com/body/health-fitness/advice/g871/pushup-workout/>