<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://ichef-1.bbci.co.uk/news/560/media/images/75880000/jpg/_75880086_barton_its-raining-cat_978-1-84905-283-2_colourjpg-web.jpg>
<http://www.bbc.com/news/blogs-ouch-27975772>