<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://ichef-1.bbci.co.uk/news/560/media/images/63364000/jpg/_63364722_liu_xiaobo.jpg>
<http://www.bbc.co.uk/news/world-asia-china-19875389?postId=113949268>