<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://wdy.h-cdn.co/assets/cm/15/09/768x516/54ebb7d21a10c_-_wd-husbands-turn-down-sex-4-xl.jpg>
<http://www.womansday.com/relationships/sex-tips/advice/g1149/no-sex-in-marriage/>