<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://rbk.h-cdn.co/assets/cm/14/50/640x480/548a0c35c946e_-_rbk-yoga-plank-msc.jpg>
<http://www.redbookmag.com/body/health-fitness/advice/g1177/yoga-exercises-to-feel-happier/>