| http://www.w3.org/ns/prov#value | - Revenues for the 100 top-selling North American tours were $1.1 billion for the first half of 2011, a rise of 16 percent following lackluster sales in 2010.Promoters say they can not disappoint the fans who by those tickets.There is an expectation, said Jacob Worek, who runs Portland, Ore.,-based Event Safety Consultants.
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