<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://ichef.bbci.co.uk/news/560/media/images/63524000/jpg/_63524041_51241742_chinese_mandarins_circa_1400_getty_464x261.jpg>
<http://www.bbc.co.uk/news/magazine-19962432>