<http://schema.org/headline>
"Calling Festival 2014&amp;#x3a; Buy Stevie Wonder and Aerosmith tickets for Clapham Common event in London on 28 and 29 June - Mirror Online"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.mirror.co.uk/lifestyle/going-out/music/calling-festival-2014-buy-stevie-3716580>