<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://ichef.bbci.co.uk/news/560/media/images/71550000/jpg/_71550951_troedrhiwdrain_milky_way.jpg>
<http://www.bbc.co.uk/news/uk-wales-mid-wales-25236823>