<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://wdy.h-cdn.co/assets/cm/15/08/54ea76f485b15_-_get_flash_player.gif>
<http://www.womansday.com/health-fitness/womens-health/a2445/whats-your-oral-health-iq-117657/>