<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://ichef-1.bbci.co.uk/news/560/media/images/73703000/jpg/_73703299_novack-goldin-meadow-et-al-v-point-gesture-photo-350x250.jpg>
<http://www.bbc.co.uk/news/health-26643823>