<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://ichef.bbci.co.uk/news/560/media/images/73760000/jpg/_73760565_nz_p3_orion_human_eyes_essential_for_search-1070379.jpg>
<http://www.bbc.co.uk/news/world-asia-26707244>