<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://ichef-1.bbci.co.uk/news/560/media/images/73999000/jpg/_73999916_t9800551-post-traumatic_stress_disorder_treatment-spl.jpg>
<http://www.bbc.com/news/health-26867615>