<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://ichef-1.bbci.co.uk/news/560/media/images/67970000/jpg/_67970730_2013_04_06_acrossamerica_flightdallastostlouis_landing_revillard-12.jpg>
<http://www.bbc.com/news/science-environment-23195087>