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Nun Concepcion Hernandez, originally from Mexico, holds an Argentinian flag while awaiting the arrival of Pope Francis outside the Metropolitan Cathedral on July 22, 2013 in Rio de Janeiro, Brazil. Hernandez is currently a Catholic missionary in Argentina. More than 1.5 million pilgrims are expected to join Pope Francis for his visit to the Catholic Church's World Youth Day celebrations. Pope Francis is scheduled to visit Brazil from July 22 to 28. (Photo by Mario Tama/Getty Images) ( 174236408 )

Pope Francis walks accompanied by Brazil's President Dilma Rousseff upon his arrival at the international airport in Rio de Janeiro, Brazil, Monday, July 22, 2013. During his seven-day visit, Francis will meet with legions of young Roman Catholics converging on Rio for the church's World Youth Day festival. (AP Photo/Jorge Saenz) ( Brazil Pope World Youth Day )

Faithfuls with flags of Chile (front), Venezuela (back) and Colombia (R) wait for Pope Francis to pass in an open-top jeep after his arrival in Rio de Janeiro on July 22, 2013. AFP PHOTO / TASSO MARCELO/AFP/Getty Images ( 521552831 )

Pope Francis deplanes upon his arrival at the international airport in Rio de Janeiro, Brazil, Monday, July 22, 2013.(AP Photo/Jorge Saenz) ( Brazil Pope World Youth Day )

A man holds a Pope Francis flag inside the Metropolitan Cathedral before the arrival of Pope Francis on July 22, 2013 in Rio de Janeiro, Brazil. (Photo by Mario Tama/Getty Images) ( 174236772 )

People wait outside the Metropolitan Cathedral for the arrival of Pope Francis on July 22, 2013 in Rio de Janeiro, Brazil. (Photo by Mario Tama/Getty Images) ( 174239419 )

Pope Francis walks with Brazil's President Dilma Rousseff upon arrival at Antonio Carlos Jobim International Airport in Rio de Janeiro, July 22, 2013. REUTERS/Pilar Olivares ( BRAZIL-POPE/ )

Faithful holding a Brazilian flag, left, and a U.S. flag, right, gather outside Rio de Janeiro's cathedral, background, as they wait for the arrival of Pope Francis to Rio de Janeiro, Brazil, Monday, July 22, 2013. (AP Photo/Victor R. Caivano) ( Brazil Pope )

Pope Francis waves as he is accompanied by Brazil's President Dilma Rousseff upon his arrival at the international airport in Rio de Janeiro, Brazil, Monday, July 22, 2013, in his first trip as pontiff to Latin America. (AP Photo/Jorge Saenz) ( Brazil Pope World Youth Day )

Brazil's President Dilma Rousseff talks to Pope Francis as she accompanies him upon his arrival at the international airport in Rio de Janeiro, Brazil, Monday, July 22, 2013. (AP Photo/Jorge Saenz) ( Brazil Pope World Youth Day )

Pope Francis deplanes upon his arrival at the international airport in Rio de Janeiro, Brazil, Monday, July 22, 2013. During his seven-day visit, Francis will meet with legions of young Roman Catholics converging on Rio for the church's World Youth Day festival. (AP Photo/Jorge Saenz) ( Brazil Pope World Youth Day )

Pope Francis walks out of the plane upon landing at Rio de Janeiro's GaleaoAntonio Carlos Jobim International Airport on July 22, 2013. AFP PHOTO / YASUYOSHI CHIBA/AFP/Getty Images ( 521552836 )

A Brazilian flag, left, and a Vatican fly from the plane carrying Pope Francis after it landed at the Rio de Janeiro airport Monday, July 22, 2013, in his first trip as pontiff to Latin America. Francis, the 76-year-old Argentine who became the church's first pontiff from the Americas in March, returns to the embrace of Latin America to preside over the Roman Catholic Church's World Youth Day festival. (AP Photo/Jorge Saenz) ( CORRECTION Brazil Pope World Youth Day )

Magazines on Pope Francis are seen in a kiosk in Rio de Janeiro, Brazil on July 22, 2013. Pope Francis will arrive in Rio Monday afternoon for the World Youth Day (WYD), to take place until July 28. AFP PHOTO / GABRIEL BOUYS/AFP/Getty Images ( 521549301 )

People wait across the city for Pope Francis to pass in an open-top jeep after his arrival in Rio de Janeiro on July 22, 2013. AFP PHOTO / GABRIEL BOUYS/AFP/Getty Images ( 521552381 )

People wait across the city for Pope Francis to pass in an open-top jeep after his arrival in Rio de Janeiro on July 22, 2013. AFP PHOTO / GABRIEL BOUYS/AFP/Getty Images ( 521552403 )

A balloon reading "I Love Pope Francis" is seen as people wait across the city for Pope Francis to pass in an open-top jeep after his arrival in Rio de Janeiro on July 22, 2013. AFP PHOTO / GABRIEL BOUYS/AFP/Getty Images ( 521552414 )

Faithfuls wait across Rio de Janeiro for Pope Francis to pass in an open-top jeep after his arrival in the city on July 22, 2013. AFP PHOTO / GABRIEL BOUYS/AFP/Getty Images ( 521552635 )

Faithfuls wait across Rio de Janeiro for Pope Francis to pass in an open-top jeep after his arrival in the city on July 22, 2013. AFP PHOTO / GABRIEL BOUYSGABRIEL BOUYS/AFP/Getty Images ( 521552644 )

Faithfuls wait across Rio de Janeiro for Pope Francis to pass in an open-top jeep after his arrival in the city on July 22, 2013. AFP PHOTO / GABRIEL BOUYS/AFP/Getty Images ( 521552666 )

A man holds a poster welcoming Pope Francis as faithfuls wait for the pope to pass in an open-top jeep after his arrival in Rio de Janeiro on July 22, 2013. AFP PHOTO / GABRIEL BOUYS/AFP/Getty Images ( 521552783 )

Faithfuls with flags of Chile (front R) and Venezuela wait for Pope Francis to pass in an open-top jeep after his arrival in Rio de Janeiro on July 22, 2013. AFP PHOTO / TASSO MARCELO/AFP/Getty Images ( 521552859 )

Faithfuls wave a Brazilian national flag as they wait for Pope Francis to pass in an open-top jeep after his arrival in Rio de Janeiro on July 22, 2013. AFP PHOTO / GABRIEL BOUYS/AFP/Getty Images ( 521552883 )

Women demonstrate for the rights of women as faithfuls wait for Pope Francis to pass in an open-top jeep after his arrival in Rio de Janeiro on July 22, 2013. AFP PHOTO / TASSO MARCELO/AFP/Getty Images ( 521552950 )

Women demonstrate for the rights of women as faithfuls wait for Pope Francis to pass in an open-top jeep after his arrival in Rio de Janeiro on July 22, 2013.AFP PHOTO / TASSO MARCELO/AFP/Getty Images ( 521552965 )

Faithful cheer in front of Rio de Janeiro's cathedral, background, as they wait for the arrival of Pope Francis, in Rio de Janeiro, Brazil, Monday, July 22, 2013. (AP Photo/Victor R. Caivano) ( Brazil Pope )

A group of children cheer and sing songs as Pope Francis deplanes upon his upon his arrival at the international airport in Rio de Janeiro, Brazil, Monday, July 22, 2013, in his first trip as pontiff to Latin America. (AP Photo/Jorge Saenz) ( Brazil Pope World Youth Day )

Pope Francis waves to the crowd while departing the Metropolitan Cathedral in the Popemobile after arriving in Rio on July 22, 2013 in Rio de Janeiro, Brazil. (Photo by Mario Tama/Getty Images) ( 174244391 )

Participants in the upcoming World Youth Day gather to await Pope Francis' motorcade in central Rio de Janeiro, July 22, 2013. REUTERS/Lucas Landau ( BRAZIL-POPE/ )

Pope Francis laughs while speaking to journalists travelling on the papal flight to Rio de Janeiro, July 22, 2013. REUTERS/Ansa/Luca Zennaro/Pool ( BRAZIL-POPE/ )

Pope Francis laughs while speaking to journalists travelling on the papal flight to Rio de Janeiro, July 22, 2013. REUTERS/Ansa/Luca Zennaro/Pool ( BRAZIL-POPE/ )

Pope Francis waves to faithful as he arrives in Rio de Janeiro July 22, 2013. Welcomed by a committee of local dignitaries, including President Dilma Rousseff, Francis waved to onlookers before proceeding to a motorcade through Rio's city center, where local Catholics, visiting pilgrims and the curious were gathered to receive him. REUTERS/Stefano Rellandini ( POPE-BRAZIL/ )

Pope Francis greets the crowd of faithful from his popemobile in downtown Rio de Janeiro, July 22, 2013. REUTERS/Ueslei Marcelino ( POPE-BRAZIL/ )

Pope Francis gestures to journalists during his direct papal flight to Rio de Janeiro, Brazil, Monday, 22 July 2013. (AP Photo/Luca Zennaro, Pool) ( Brazil Pope World Youth Day )

A detail of the hand of Pope Francis during the direct papal flight to Rio de Janeiro, Brazil, Monday, 22 July 2013. (AP Photo/Luca Zennaro, Pool) ( Brazil Pope World Youth Day )

Pope Francis accepts a Brazilian flag from journalists during the direct papal flight to Rio de Janeiro, Monday, July 22, 2013. (AP Photo/Luca Zennaro, Pool) ( Brazil Pope World Youth Day )

Pope Francis waves from his popemobile as he makes his way into central Rio de Janeiro, Brazil, Monday, July 22, 2013. (AP Photo/Felipe Dana) ( Brazil Pope World Youth Day )

Pope Francis waves at faithfuls from the popemobile on his way to the Guanabara Palace after his arrival in Rio de Janeiro on July 22, 2013. AFP PHOTO / GABRIEL BOUYS/AFP/Getty Images ( 521554030 )

Pope Francis waves at faithfuls from the popemobile on his way to the Guanabara Palace after his arrival in Rio de Janeiro on July 22, 2013. AFP PHOTO / GABRIEL BOUYS/AFP/Getty Images ( 521554075 )

Pope Francis waves at faithfuls from the popemobile on his way to the Guanabara Palace after his arrival in Rio de Janeiro on July 22, 2013. AFP PHOTO / GABRIEL BOUYS/AFP/Getty Images ( 521554114 )

Pope Francis waves at faithfuls from the popemobile on his way to the Guanabara Palace after his arrival in Rio de Janeiro on July 22, 2013. AFP PHOTO / GABRIEL BOUYS/AFP/Getty Images ( 521554215 )

Pope Francis waves at faithfuls from the popemobile on his way to the Guanabara Palace after his arrival in Rio de Janeiro on July 22, 2013. AFP PHOTO / GABRIEL BOUYS/AFP/Getty Images ( 521554252 )

Pope Francis (L) and father Federico Lombardi greet journalists of the papal flight upon arrival in Rio de Janeiro on July 22, 2013. AFP PHOTO/LUCA ZENNARO/POOL ( 521554118 )

Pope Francis (C) and father Federico Lombardi (R) greet a journalist of the papal flight upon arrival in Rio de Janeiro on July 22, 2013. AFP PHOTO/LUCA ZENNARO/POOL ( 521554176 )

Pope Francis shows an image of Our Lady of Guadalupe --a gift from a journalist of the papal flight-- upon arrival in Rio de Janeiro on July 22, 2013. AFP PHOTO/LUCA ZENNARO/POOL ( 521554002 )

Pope Francis (L) next to father Federico Lombardi, greets journalists of the papal flight upon arrival in Rio de Janeiro on July 22, 2013. AFP PHOTO/LUCA ZENNARO/POOL ( 521554145 )

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/AFP/Getty Images ( 521554090 )