<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://hbu.h-cdn.co/assets/cm/15/04/320x320/54c16090c8faa_-_photo-chain-binder-hrbkjr-de-pdapal-thumb2.jpg>
<http://www.housebeautiful.com/lifestyle/organizing-tips/news/g1801/binder-clip-hacks-goodhousekeeping/>