<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://ichef-1.bbci.co.uk/news/560/media/images/61547000/jpg/_61547636_z9150108-face_of_a_pipistrelle_bat-spl.jpg>
<http://www.bbc.com/news/science-environment-19803167>