<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://hbu.h-cdn.co/assets/cm/15/04/320x426/54c0cb8b47a79_-_04-hbx-paris-vs-new-york-postcards-de.jpg>
<http://www.housebeautiful.com/lifestyle/fun-at-home/g1415/unique-postcard-designs/>