<http://schema.org/headline>
"SAS sniper Sgt Danny Nightingale&amp;#x27;s wife Sally pleads with PM David Cameron in open letter for help with his release - Mirror Online"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.mirror.co.uk/news/uk-news/sas-sniper-sgt-danny-nightingales-1444316>