<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://cos.h-cdn.co/assets/cm/14/28/53bedbdbe4661_-_cos-08-sexy-couple-in-bed-sitting-mdn.jpg>
<http://www.cosmopolitan.com/sex-love/news/a12279/u-penn-sex-week/>