<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://mac.h-cdn.co/assets/cm/14/49/5482eee38d5ca_-_mcx-sheryl-sandberg-youngest-billionaire.jpg>
<http://www.marieclaire.com/culture/news/a8909/sheryl-sandberg-becomes-billionaire/?click=rel>