16 of 25: Dean John Mann holds a moment of silence outside Belfast City Hall following a service in commemoration of the Titanic at St. Ann's Cathedral, in Belfast, Northern Ireland, Saturday, April 14, 2012. A century after the great ship went down with the loss of 1,500 lives, events around the globe are marking a tragedy that retains a titanic grip on the world's imagination-an icon of Edwardian luxury that became, in a few dark hours 100 years ago, an enduring emblem of tragedy. (AP Photo/Peter Morrison) ( Photo)

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