<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://toc.h-cdn.co/assets/14/37/980x490/540f84491e9be_-_tcx-01-leonardo-da-vinci-mona-lisa-painting-1212-105580-lg.jpg>
<http://www.townandcountrymag.com/leisure/g145/photos-of-giancarlo-gianazza-iceland-expedition/>