"A woman walks past a happy birthday banner for former South African President Nelson Mandela on July 18, 2013 outside the Medi Clinic Heart Hospital in Pretoria, where the anti-apartheid legend is spending his 95th birthday. Children in schools around the country kicked off the celebrations by singing ""Happy Birthday"" to Mandela, on a day that also marked the 15th anniversary of his marriage to third wife Graca Machel.The United Nations declared the Nobel Peace laureate's birthday Mandela Day in 2010, but for many this year it takes on extra poignancy. AFP PHOTO/STEPHANE DE SAKUTIN/AFP/Getty Images"
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