<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://ghk.h-cdn.co/assets/cm/15/11/54feb47f5b1b5-0711-peggy-keenan-md.jpg>
<http://www.goodhousekeeping.com/health/a19281/osteoporosis-report/?src=shelter_footer>