<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://rbk.h-cdn.co/assets/cm/14/49/640x480/547efd3c5a4c1_-_espresso-bar-sign-0809-msc.jpg>
<http://www.redbookmag.com/love-sex/sex/advice/a5148/thinking-about-sex/>