Six-year old Alex Warouaon from Chicago, USA, who's great-great-great-grandfather died in the Titanic disaster, touches his name Anthony Frost, on the Titanic Memorial Plaque during the service at Belfast City Hall, Northern Ireland, Sunday, April 15, 2012, one-hundred years after the Titanic sank. The Titanic passenger liner was built in Belfast, and sank in the North Atlantic Ocean on its maiden voyage from England to New York, USA, in the early hours of April 15, 1912, after colliding with an iceberg and over 1,500 people perished in the sinking. (AP Photo/Peter Morrison)

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