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Contemporary artist Daniel Buren poses in the Grand Palais during the opening of ground-breaking Monumenta exhibit in Paris, Wednesday May 9, 2012. Monumenta, the hugely-popular annual installation project that's in its fifth year, dares an artist of international statue to "move into" the nave of one of the French capital's most monumentus buildings, and own it. (AP Photo/Francois Mori)

Grand Palais opens Monumenta

Contemporary artist Daniel Buren's Monumneta 2012 exhibition opens at the Grand Palais, Paris.