<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://wdy.h-cdn.co/assets/cm/15/09/54eade8d4947d_-_07-most-common-sex-therapy-problems-1.jpg>
<http://www.womansday.com/relationships/sex-tips/advice/a1992/7-common-reasons-to-seek-sex-therapy-111854/>