<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://sev.h-cdn.co/assets/cm/15/09/160x245/54ecf84e5c17a_-_sev-cc-prom-11-have-fun-v-8850414.jpg>
<http://www.seventeen.com/prom/tips/g744/prom-dos-and-donts/>