<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://ichef-1.bbci.co.uk/news/560/media/images/82358000/jpg/_82358331_e3800204-avhrr_image_of_ash_cloud_from_mt_pinatubo-spl.jpg>
<http://www.bbc.com/news/science-environment-32334528>