<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://ichef-1.bbci.co.uk/news/560/media/images/72376000/jpg/_72376237_main_control_room_at_esa_s_space_operations_centre.jpg>
<http://www.bbc.com/news/science-environment-25814454>