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The Baltimore Ravens celebrate after winning the NFL Super Bowl XLVII football game against the San Francisco 49ers, Sunday, Feb. 3, 2013, in New Orleans. The Ravens won 34-31. (AP Photo/Gerald Herbert)
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Baltimore Ravens head coach John Harbaugh celebrates after defeating the San Francisco 49ers 34-31 in the NFL Super Bowl XLVII football game, Sunday, Feb. 3, 2013, in New Orleans. (AP Photo/Patrick Semansky)
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Players stand in the dark during a power failure in the second half of the NFL Super Bowl XLVII football game between the San Francisco 49ers and Baltimore Ravens, Sunday, Feb. 3, 2013, in New Orleans. (AP Photo)
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Baltimore Ravens quarterback Joe Flacco (5) passes against the San Francisco 49ers during the first half of NFL Super Bowl XLVII football game, Sunday, Feb. 3, 2013, in New Orleans. (AP Photo/Elise Amendola)
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Baltimore Ravens kicker Justin Tucker, right, makes a 38-yard field goal during the second half of the NFL Super Bowl XLVII football game against the San Francisco 49ers, Sunday, Feb. 3, 2013, in New Orleans. (AP Photo/Matt Slocum)
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Baltimore Ravens linebacker Ray Lewis, left, and quarterback Joe Flacco celebrate their 34-31 win against the San Francisco 49ers in the NFL Super Bowl XLVII football game, Sunday, Feb. 3, 2013, in New Orleans. (AP Photo/Julio Cortez)
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Baltimore Ravens linebacker Ray Lewis holds up a newspaper after defeating the San Francisco 49ers in the NFL Super Bowl XLVII football game, Sunday, Feb. 3, 2013, in New Orleans. The Ravens won 34-31. (AP Photo/Elaine Thompson)
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San Francisco 49ers tight end Vernon Davis (85) makes a catch against Baltimore Ravens safety Ed Reed (20) during the first half of the NFL Super Bowl XLVII football game, Sunday, Feb. 3, 2013, in New Orleans. (AP Photo/Gene Puskar)
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Beyonce performs during the halftime show of the NFL Super Bowl XLVII football game between the San Francisco 49ers and the Baltimore Ravens, Sunday, Feb. 3, 2013, in New Orleans. (AP Photo/Matt Slocum)
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Baltimore Ravens linebacker Ray Lewis speaks at an NFL Super Bowl XLVII news conference on Thursday, Jan. 31, 2013, in New Orleans. The Ravens face the San Francisco 49ers in Super Bowl XLVII on Sunday, Feb. 3. (AP Photo/Patrick Semansky)
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Beyonce performs with Kelly Rowland, left, and Michelle Williams, right, of Destiny's Child, during the halftime show of the NFL Super Bowl XLVII football game between the San Francisco 49ers and the Baltimore Ravens, Sunday, Feb. 3, 2013, in New Orleans. (AP Photo/Gerald Herbert)
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Baltimore Ravens linebacker Dannell Ellerbe (59) tries to tackle San Francisco 49ers running back Frank Gore (21) during the first half of the NFL Super Bowl XLVII football game, Sunday, Feb. 3, 2013, in New Orleans. (AP Photo/Elise Amendola)
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People photograph the Roman numerals for NFL Super Bowl XLVII as they are silhouetted against the morning sky Friday, Feb. 1, 2013, in New Orleans. The city will host the football game between the San Francisco 49ers and Baltimore Ravens. (AP Photo/Charlie Riedel)
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Confetti falls in the Superdome as the Baltimore Ravens celebrate their 34-31 win against the San Francisco 49ers in the NFL Super Bowl XLVII football game, Sunday, Feb. 3, 2013, in New Orleans. (AP Photo/Matt Slocum)
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Jennifer Hudson, center, sings "God Bless America" before the NFL Super Bowl XLVII football game between the San Francisco 49ers and the Baltimore Ravens, Sunday, Feb. 3, 2013, in New Orleans. (AP Photo/David Goldman)
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Baltimore Ravens wide receiver Anquan Boldin (81) catches a 13-yard pass for a touchdown as San Francisco 49ers linebacker NaVorro Bowman (53) trails the play during the first half of the NFL Super Bowl XLVII football game, Sunday, Feb. 3, 2013, in New Orleans. (AP Photo/Gerald Herbert)
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San Francisco 49ers head coach Jim Harbaugh, right, and Baltimore Ravens head coach John Harbaugh look on during warmups before the NFL Super Bowl XLVII football game, Sunday, Feb. 3, 2013, in New Orleans. (AP Photo/Matt Slocum)
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Beyoncý speaks during a news conference Thursday, Jan. 31, 2013, in New Orleans. Beyoncý is scheduled to perform during halftime of the NFL Super Bowl XLVII football game on Sunday, Feb. 3, 2013. (AP Photo/Matt Slocum)
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Baltimore Ravens safety Ed Reed (20) celebrates his team's 34-31 win against the San Francisco 49ers in the NFL Super Bowl XLVII football game, Sunday, Feb. 3, 2013, in New Orleans. (AP Photo/Matt Slocum)
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Fans and members of the Baltimore Ravens and the San Francisco 49ers wait for power to return in the Superdome during an outage in the second half of the NFL Super Bowl XLVII football game, Sunday, Feb. 3, 2013, in New Orleans. (AP Photo/Gerald Herbert)
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Baltimore Ravens defensive end Arthur Jones (97) kisses the Vince Lombardi Trophy after defeating the San Francisco 49ers 34-31 in the NFL Super Bowl XLVII football game, Sunday, Feb. 3, 2013, in New Orleans. (AP Photo/Dave Martin)
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Baltimore Ravens quarterback Joe Flacco (5) and offensive lineman Marshal Yanda (73) celebrate their team's 34-31 win against the San Francisco 49ers in the NFL Super Bowl XLVII football game, Sunday, Feb. 3, 2013, in New Orleans. (AP Photo/Matt Slocum)
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Baltimore Ravens fan Scott Milliot, foreground, of San Francisco, takes a picture of his wife Regina in front of the Super Bowl XLVII sculpture on a barge along the Riverwalk , Saturday, Feb. 2, 2013, in New Orleans. The city will host NFL football's Super Bowl XLVII between the Baltimore Ravens and the San Francisco 49ers on Sunday. (AP Photo/Gene J. Puskar)
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Baltimore Ravens defensive back Chykie Brown (23) lays in the confetti after defeating the San Francisco 49ers 34-31 in the NFL Super Bowl XLVII football game, Sunday, Feb. 3, 2013, in New Orleans. (AP Photo/Marcio Sanchez)
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San Francisco 49ers wide receiver Michael Crabtree (15) cannot reach a pass thrown on fourth-and-goal as Baltimore Ravens safety Ed Reed (20) defends late in the fourth quarter of the NFL Super Bowl XLVII football game, Sunday, Feb. 3, 2013, in New Orleans. (AP Photo/Charlie Riedel)
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Alicia Keys sings the national anthem before the NFL Super Bowl XLVII football game between the San Francisco 49ers and the Baltimore Ravens, Sunday, Feb. 3, 2013, in New Orleans. (AP Photo/Gene Puskar)
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San Francisco 49ers quarterback Colin Kaepernick (7) wipes his face after losing 34-31 to the Baltimore Ravens in the NFL Super Bowl XLVII football game, Sunday, Feb. 3, 2013, in New Orleans. (AP Photo/David Goldman)
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Baltimore Ravens quarterback Joe Flacco (5) reacts to a 13-yard touchdown pass caught by wide receiver Anquan Boldin (81) against the San Francisco 49ers in the first quarter of the NFL Super Bowl XLVII football game, Sunday, Feb. 3, 2013, in New Orleans. (AP Photo/Patrick Semansky)
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Baltimore Ravens tight end Billy Bajema (86) lays in the confetti with two young boys after defeating the San Francisco 49ers 34-31 in the NFL Super Bowl XLVII football game, Sunday, Feb. 3, 2013, in New Orleans. (AP Photo/Marcio Sanchez)
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Alicia Keys sings the national anthem before the NFL Super Bowl XLVII football game between the San Francisco 49ers and the Baltimore Ravens, Sunday, Feb. 3, 2013, in New Orleans. (AP Photo/Patrick Semansky)
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Baltimore Ravens linebacker Ray Lewis (52) celebrates after defeating the San Francisco 49ers 34-31 in the NFL Super Bowl XLVII football game, Sunday, Feb. 3, 2013, in New Orleans. (AP Photo/Evan Vucci)
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San Francisco 49ers quarterback Colin Kaepernick signals a plays against the Baltimore Ravens during the first half of the NFL Super Bowl XLVII football game, Sunday, Feb. 3, 2013, in New Orleans. (AP Photo/Patrick Semansky)
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Beyonce performs during the halftime show of the NFL Super Bowl XLVII football game between the San Francisco 49ers and the Baltimore Ravens, Sunday, Feb. 3, 2013, in New Orleans. (AP Photo/Charlie Riedel)
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Baltimore Ravens safety Ed Reed (20) embraces owner Stephen J. Bisciotti after defeating the San Francisco 49ers 34-31 in the NFL Super Bowl XLVII football game, Sunday, Feb. 3, 2013, in New Orleans. (AP Photo/Gene Puskar)
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Confetti falls in the Superdome as the Baltimore Ravens celebrate their 34-31 win against the San Francisco 49ers in the NFL Super Bowl XLVII football game, Sunday, Feb. 3, 2013, in New Orleans. (AP Photo/Matt Slocum)
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Beyoncý speaks during a news conference Thursday, Jan. 31, 2013, in New Orleans. Beyoncý is scheduled to perform during halftime of the NFL Super Bowl XLVII football game on Sunday, Feb. 3, 2013. (AP Photo/Matt Slocum)
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Baltimore Ravens cornerback Corey Graham (24) breaks up a pass intended for San Francisco 49ers wide receiver Michael Crabtree (15) during the second half of the NFL Super Bowl XLVII football game, Sunday, Feb. 3, 2013, in New Orleans. (AP Photo/Bill Haber)
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Baltimore Ravens owner Stephen J. Bisciotti holds up the Vince Lombardi Trophy after the team's 34-31win against the San Francisco 49ers in the NFL Super Bowl XLVII football game, Sunday, Feb. 3, 2013, in New Orleans. (AP Photo/Matt Slocum)
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San Francisco 49ers cornerback Tarell Brown (25) recovers a fumble by Baltimore Ravens running back Ray Rice (27) as tight end Dennis Pitta (88) closes in during the second half of the NFL Super Bowl XLVII football game, Sunday, Feb. 3, 2013, in New Orleans. (AP Photo/Charlie Riedel)
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San Francisco 49ers tight end Vernon Davis (85) makes a catch against Baltimore Ravens safety Ed Reed (20) during the first half of the NFL Super Bowl XLVII football game, Sunday, Feb. 3, 2013, in New Orleans. (AP Photo/Gene Puskar)
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Players warm up on the field before the NFL Super Bowl XLVII football game between the San Francisco 49ers and the Baltimore Ravens, Sunday, Feb. 3, 2013, in New Orleans. (AP Photo/Matt Slocum)
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San Francisco 49ers head coach Jim Harbaugh, left, and Baltimore Ravens head coach John Harbaugh talk before the NFL Super Bowl XLVII football game, Sunday, Feb. 3, 2013, in New Orleans. (AP Photo/Matt Slocum)
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Baltimore Ravens linebacker Ray Lewis (52) hoists the Vince Lombardi Trophy after defeating the San Francisco 49ers 34-31 in the NFL Super Bowl XLVII football game, Sunday, Feb. 3, 2013, in New Orleans. (AP Photo/Gerald Herbert)
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Baltimore Ravens quarterback Joe Flacco rolls out to pass against the San Francisco 49ers during the first half of the NFL Super Bowl XLVII football game, Sunday, Feb. 3, 2013, in New Orleans. (AP Photo/Dave Martin)
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Beyonce performs during the halftime show of NFL Super Bowl XLVII football game between the San Francisco 49ers and the Baltimore Ravens, Sunday, Feb. 3, 2013, in New Orleans. (AP Photo/Bill Haber)
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Baltimore Ravens wide receiver Anquan Boldin (81) catches a 13-yard touchdown pass against San Francisco 49ers safety Donte Whitner during the first half of the NFL Super Bowl XLVII football game, Sunday, Feb. 3, 2013, in New Orleans. (AP Photo/David Goldman)
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Baltimore Ravens fan Cal Wheaton looks out toward the Super Bowl XLVII sculpture on a barge along the Riverwalk in New Orleans, Sunday, Feb. 3, 2013. The city hosts NFL football's Super Bowl XLVII between the San Francisco 49ers and Baltimore Ravens on Sunday. (AP Photo/Jeff Chiu)
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Baltimore Ravens linebacker Ray Lewis looks around before their NFL Super Bowl XLVII football game against the San Francisco 49ers, Sunday, Feb. 3, 2013, in New Orleans. (AP Photo/Dave Martin)
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Baltimore Ravens inside linebacker Ray Lewis (52) tackles San Francisco 49ers running back Frank Gore (21) during the first half of the NFL Super Bowl XLVII football game, Sunday, Feb. 3, 2013, in New Orleans. (AP Photo/Elise Amendola)
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Playes look around the stadium after the lights went out during the second half of NFL Super Bowl XLVII football game Sunday, Feb. 3, 2013, in New Orleans. (AP Photo/Matt Slocum)
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San Francisco 49ers quarterback Colin Kaepernick (7) carries the ball past Baltimore Ravens linebacker Terrell Suggs (55) during the first half of the NFL Super Bowl XLVII football game, Sunday, Feb. 3, 2013, in New Orleans. (AP Photo/Matt Slocum)
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Actor Will Farrell walks on the field before the NFL Super Bowl XLVII football game between the San Francisco 49ers and the Baltimore Ravens, Sunday, Feb. 3, 2013, in New Orleans. (AP Photo/Patrick Semansky)
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San Francisco 49ers head coach Jim Harbaugh, right, and Baltimore Ravens head coach John Harbaugh look on during warmups before the NFL Super Bowl XLVII football game, Sunday, Feb. 3, 2013, in New Orleans. (AP Photo/Matt Slocum)
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Students from Sandy Hook Elementary School sing "America the Beautiful" before the NFL Super Bowl XLVII football game between the San Francisco 49ers and the Baltimore Ravens, Sunday, Feb. 3, 2013, in New Orleans. (AP Photo/Charlie Riedel)
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Baltimore Ravens linebacker Ray Lewis (52) and safety Bernard Pollard (31) react to an incomplete pass thrown by San Francisco 49ers quarterback Colin Kaepernick (7) during the second half of the NFL Super Bowl XLVII football game, Sunday, Feb. 3, 2013, in New Orleans. The Ravens won 34-31. (AP Photo/Mark Humphrey)
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Fans take pictures in the Superdome after the lights went out during the second half of the NFL Super Bowl XLVII football game between the San Francisco 49ers and the Baltimore Ravens on Sunday, Feb. 3, 2013, in New Orleans. (AP Photo/Gerald Herbert)
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Baltimore Ravens linebacker Ray Lewis holds up the Vince Lombardi Trophy as he celebrates with free safety Ed Reed (20) after defeating the San Francisco 49ers 34-31 in the NFL Super Bowl XLVII football game, Sunday, Feb. 3, 2013, in New Orleans. (AP Photo/Elaine Thompson)
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Baltimore Ravens wide receiver Anquan Boldin (81) catches a 13-yard touchdown pass during the first half of the NFL Super Bowl XLVII football game against the San Francisco 49ers, Sunday, Feb. 3, 2013, in New Orleans. (AP Photo/Matt Slocum)
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San Francisco 49ers quarterback Colin Kaepernick (7) hands the ball off to running back Frank Gore (21) in the first quarter of the NFL Super Bowl XLVII football game against the Baltimore Ravens, Sunday, Feb. 3, 2013, in New Orleans. (AP Photo/Patrick Semansky)
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Students from Sandy Hook Elementary School sing "America the Beautiful" before the NFL Super Bowl XLVII football game between the San Francisco 49ers and the Baltimore Ravens, Sunday, Feb. 3, 2013, in New Orleans. (AP Photo/Charlie Riedel)
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Baltimore Ravens wide receiver Anquan Boldin (81) celebrates his touchdown as San Francisco 49ers safety Donte Whitner, rear, watches during the first half of the NFL Super Bowl XLVII football game, Sunday, Feb. 3, 2013, in New Orleans. (AP Photo/David Goldman)
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Half the lights are out in the Superdome during a power outage in the second half of the NFL Super Bowl XLVII football game between the San Francisco 49ers and Baltimore Ravens on Sunday, Feb. 3, 2013, in New Orleans. (AP Photo/Marcio Sanchez)