<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://wdy.h-cdn.co/assets/cm/15/09/160x213/54eb7e713918e_-_side-plank-6-mdn.jpg>
<http://www.womansday.com/health-fitness/workout-routines/advice/g133/workout-series-get-michelle-obama-arms-70059/>