<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://rbk.h-cdn.co/assets/cm/14/49/640x480/547ef1f8e2ce7_-_jennifer-ball-xlsynd.jpg>
<http://www.redbookmag.com/body/health-fitness/advice/a4648/clinical-trials-that-work/>