<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://ichef-1.bbci.co.uk/news/560/media/images/76674000/jpg/_76674840_nasa-mars-2020-rover-instrument-selection-pia18405-br2.jpg>
<http://www.bbc.co.uk/news/science-environment-28582903>