<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://ichef.bbci.co.uk/news/560/media/images/45958000/jpg/_45958099_xc_photo_dragline_at_bulga_thermal_coal_operation_australia.jpg>
<http://www.bbc.co.uk/news/10519264>