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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