<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://rbk.h-cdn.co/assets/cm/14/49/547ee1ce26d88_-_gastric-bypass-after-xlsynd.jpg>
<http://www.redbookmag.com/body/health-fitness/advice/a3949/gastric-bypass-weight-loss/>