<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://mac.h-cdn.co/assets/cm/14/49/547d146e4e780_-_hpv-vaccine-0208-2-large-new.jpg>
<http://www.marieclaire.com/health-fitness/news/a1097/hpv-vaccine-sex-lies/>