Peter's Basilica

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Pope Francis holds the pastoral staff after he bestowed the Pallium, a woolen shawl symbolizing their bond to the pope, to 35 Archbishops, during a mass in St. Peter's Basilica, at the Vatican, Saturday, June 29, 2013. (Associated Press)

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Pope Francis lies down in prayer during the Passion of Christ Mass inside St. Peter's Basilica, at the Vatican, Friday, March 29, 2013. (AP Photo/Gregorio Borgia)

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A floodlight illuminates the central balcony of St. Peter's Basilica, from where the newly elected pope will salute the crowd, at the Vatican, Tuesday, March 12, 2013. (AP Photo/Luca Bruno)

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Members of the media take photos of a pilgrim in St. Peter's Square during a mass at St. Peter's Basilica attended by cardinals before sequestering themselves in the Sistine Chapel for the conclave to elect the next pope at the Vatican Tuesday. (AP Photo/Michael Sohn)

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** FILE ** Pope Benedict XVI leaves St. Peter's Basilica on a mobile platform at the end of a Mass at the Vatican on Sunday, Oct. 16, 2011. (AP Photo/Gregorio Borgia)

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Pope Benedict XVI greets the faithful at the end of the Ash Wednesday Mass in St. Peter's Basilica at the Vatican on Wednesday, Feb. 13, 2013. (AP Photo/Gregorio Borgia)

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Pope Benedict XVI delivers his "Urbi et Orbi" ('To the City and to the World") speech from the central loggia of St. Peter's Basilica at the Vatican on Tuesday, Dec. 25, 2012. (AP Photo/Gregorio Borgia)

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Pope Benedict XVI delivers his "Urbi et Orbi" ("To the City and to the World") address from the central loggia of St. Peter's Basilica at the Vatican in this Tuesday, Dec. 25, 2012, file photo. (AP Photo/Gregorio Borgia) ** FILE **

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Pope Benedict XVI delivers his "Urbi et Orbi" ("To the City and to the World") Christmas message from the central balcony of St. Peter's Basilica at the Vatican on Tuesday, Dec. 25, 2012. (AP Photo/Gregorio Borgia)