<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://ichef-1.bbci.co.uk/news/560/media/images/74843000/jpg/_74843757_c0167731-alzheimer_s_patient_with_her_daughter-spl.jpg>
<http://www.bbc.co.uk/news/health-27409135>