<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://ichef.bbci.co.uk/news/560/media/images/74952000/jpg/_74952475_the_future_by_airbus_-_concept_cabin_xray.jpg>
<http://www.bbc.com/news/science-environment-27425224>