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LONDON, ENGLAND - JULY 31: Children play in the 'aMAZEme' labyrinth made from books at The Southbank Centre on July 31, 2012 in London, England. Brazilian artists Marcos Saboya and Gualter Pupo used 250,000 books to create the maze which will be on display until August 25, 2012. (Photo by Peter Macdiarmid/Getty Images)

LONDON, ENGLAND - JULY 31: Children play in the 'aMAZEme' labyrinth made from books at The Southbank Centre on July 31, 2012 in London, England. Brazilian artists Marcos Saboya and Gualter Pupo used 250,000 books to create the maze which will be on display until August 25, 2012.  (Photo by Peter Macdiarmid/Getty Images)