<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://wdy.h-cdn.co/assets/cm/15/09/480x322/54eba1040b404_-_hip-flexor-stretch-xl.jpg>
<http://www.womansday.com/health-fitness/workout-routines/advice/g765/exercises-for-back-pain/?link=emb&dom=glo&src=syn&con=art&mag=wdy>