<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://wdy.h-cdn.co/assets/cm/15/09/54ebb52eec4d2_-_10-couple-bed-together-xl.jpg>
<http://www.womansday.com/relationships/sex-tips/advice/g1116/sex-statistics/>