<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://ghk.h-cdn.co/assets/cm/15/11/768x516/54ff15b6c2ee9-ghk-fitness-classes-boot-camp-xln.jpg>
<http://www.goodhousekeeping.com/health/fitness/g671/best-fitness-classes/>