<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://rbk.h-cdn.co/assets/cm/14/50/980x551/548a9437d7593_-_rbk-cardiologists-0413-2-s2.jpg>
<http://www.redbookmag.com/body/health-fitness/advice/g1515/health-advice-from-doctors/>