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Pope Francis smiles as he greets journalists of the papal flight, upon arrival in Rio de Janeiro, Brazil on July 22, 2013. Pope Francis landed in Brazil on Monday for his first overseas trip as pontiff to attend the international festival World Youth Day (WYD) in Brazil, the world's biggest Catholic country. AFP PHOTO/LUCA ZENNARO/POOL / AFP PHOTO / POOL / LUCA ZENNARO
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Pope Francis smiles as he greets journalists of the papal flight, upon arrival in Rio de Janeiro, Brazil on July 22, 2013. Pope Francis landed in Brazil on Monday for his first overseas trip as pontiff to attend the international festival World Youth Day (WYD) in Brazil, the world's biggest Catholic country. AFP PHOTO/LUCA ZENNARO/POOL / AFP PHOTO / POOL / LUCA ZENNARO
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Pope Francis smiles as he greets journalists of the papal flight, upon arrival in Rio de Janeiro, Brazil on July 22, 2013. Pope Francis landed in Brazil on Monday for his first overseas trip as pontiff to attend the international festival World Youth Day (WYD) in Brazil, the world's biggest Catholic country. AFP PHOTO/LUCA ZENNARO/POOL / AFP PHOTO / POOL / LUCA ZENNARO
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Pope Benedict XVI. holds the mascot of the FINA Swimming World Championships ?Diva? at an audience for the athletes in Castello Gandolfo near Rome, Italy, 01 August 2009. Photo: BERND THISSEN
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Cardinal Jorge Mario Bergoglio of Argentina smiles during a news conference at the Vatican, 17 October 2003. Cardinals from around the world descended on the Vatican for the biggest gathering of the Catholic Church hierarchy in years for several days of celebrations marking the 25th anniversary of Pope John Paul II's election. / AFP PHOTO / PATRICK HERTZOG
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Pope Francis smiles as he greets journalists of the papal flight, upon arrival in Rio de Janeiro, Brazil on July 22, 2013. Pope Francis landed in Brazil on Monday for his first overseas trip as pontiff to attend the international festival World Youth Day (WYD) in Brazil, the world's biggest Catholic country. AFP PHOTO/LUCA ZENNARO/POOL / AFP PHOTO / POOL / LUCA ZENNARO
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Pope Francis waves while leaving from celebrating mass in Genoa on May 27, 2017, as part of a one-day visit to the city. / AFP PHOTO / Andreas SOLARO