| http://www.w3.org/ns/prov#value | - Roskilde Festival, 2011 edition, took place between June 30 and July 3, with warm-up and camping from June 26, presenting 180 acts from all over the world, including headliners such as Arctic Monkeys, Iron Maiden, Mastodon, Kings of Leon, The Strokes and PJ Harvey.
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