<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://rbk.h-cdn.co/assets/cm/14/51/640x230/548f0f7c71e7e_-_rbk-collage-crossfit-tzudou-day5.jpg>
<http://www.redbookmag.com/body/health-fitness/advice/a16177/crossfit-plan/>