<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://rbk.h-cdn.co/assets/cm/14/50/768x516/548a5bdacc436_-_rbk-9-exercise-mistakes-slide-4-xln.jpg>
<http://www.redbookmag.com/body/health-fitness/advice/g1228/lose-weight-keep-it-off/?src=soc_fcbk>