<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://ichef.bbci.co.uk/news/560/media/images/74004000/jpg/_74004867_ironeuropeanchastitybeltlistedas16thcenturybutprobablya18th-19thcenturyfakecreditline-sciencemuseumlondonwellcomeimages.jpg>
<http://www.bbc.com/news/education-26874028>