<http://schema.org/headline>
"Queens of the Stone Age to headline Poland&amp;#039;s Open&amp;#039;er Festival"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.digitalspy.com/music/summer-festivals/news/a440477/queens-of-the-stone-age-to-headline-polands-opener-festival/>