<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://rbk.h-cdn.co/assets/cm/14/51/980x1471/548f2d9deb7e0_-_rbk-fun-winter-workouts-indoor-bike-park-s2.jpg>
<http://www.redbookmag.com/body/health-fitness/advice/g2072/winter-workout-routines/>