<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://rbk.h-cdn.co/assets/cm/14/51/640x409/placeholder_548f7c4475ed0_-_1405637056-plank_row_with_knee_twist_3.gif>
<http://www.redbookmag.com/body/health-fitness/news/a18328/completely-new-ways-to-use-dumbbells-cosmopolitan/>