Canada

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FILE - In this file photo taken Dec. 12, 2003, actor Leslie Nielsen walks off stage after receiving the Order of Canada from Governor General Adrienne Clarkson during a ceremony in Ottawa. The Canadian-born Nielsen, 84, has died in a Florida hospital on Sunday, Nov. 28, 2010, according to his agent John S. Kelly. (AP Photo/The Canadian Press, Jonathan Hayward, File)

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USA's Scott Hogsett, left to right, Chad Cohn and Nick Springer celebrate after defeating Australia in the gold medal match at the World Wheelchair Rugby Championships in Richmond, British Columbia, Canada on Sunday Sept. 26, 2010. (AP Photo/The Canadian Press, Darryl Dyck)

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USA's Nick Springer maneuver his wheelchair while playing Australia during the gold medal match at the World Wheelchair Rugby Championships in Richmond, British Columbia, Canada on Sunday Sept. 26, 2010. (AP Photo/The Canadian Press, Darryl Dyck)

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USA's Nick Springer, of New York, holds his gold medal after defeating Australia to win the World Wheelchair Rugby Championships in Richmond, British Columbia, Canada, on Sunday Sept. 26, 2010.(AP Photo/The Canadian Press, Darryl Dyck)

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Team USA celebrates their gold medal victory over Australia at the World Wheelchair Rugby Championships in Richmond, British Columbia, Canada, on Sunday Sept. 26, 2010. (AP Photo/The Canadian Press, Darryl Dyck)

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In this image released by Ottawa Hospital Research Institute, Dr. May Griffith displays a biosynthetic cornea that can be implanted into the eye to repair damage and restore sight in Ottawa, Canada, in 2005. Scientists have created a new kind of artificial cornea, inserting a sliver of collagen into the eye that coaxes its own natural corneal cells to regrow and restore vision. (AP Photo/Ottawa Hospital Research Institute)

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This screen frame is taken from magicTalk software by VocalTec, which will allow free calling to landline and cell phones in the U.S. and Canada.(AP Photo/VocalTec)

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FILE - In this July 25, 2007 file photo, Edwin Farnham Butler III, right, singer of Canadian band Arcade Fire performs during the 32nd edition of the Paleo Festival in Nyon, Switzerland. (AP Photo/Keystone, Salvatore Di Nolfi, file)

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A Royal Canadian mounted police officer stands guard as Britain's Prime Minister David Cameron, not seen, and his delegation arrives in Toronto, Canada, Thursday June 24, 2010 to attend the G8 and the G20 meetings. Cameron steps into a potential hornets' nest of trans-Atlantic conflict when he makes his global debut this week at the G-20 summit in Canada, with tensions over Afghanistan, Europe's debt crisis and the BP oil spill gaining in intensity. (AP Photo/Lefteris Pitarakis)

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President Obama walks toward the podium on the South Lawn of the White House in Washington, Friday, June 25, 2010, to speak to members of the media before traveling to attend the G-20 summit in Canada. (AP Photo/Pablo Martinez Monsivais)

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From left, National Security Adviser James Jones, White House Chief of Staff Rahm Emanuel and White House press secretary Robert Gibbs, listen to President Obama speak to members of the media on the South Lawn of the White House in Washington, Friday, June 25, 2010, before traveling to Canada to attend the G-20 summit. (AP Photo/Pablo Martinez Monsivais)

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President Obama speaks to members of the media on the South Lawn of the White House in Washington, Friday, June 25, 2010, before departing to Canada to attend the G-20 summit. (AP Photo/Pablo Martinez Monsivais)

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Treasury Secretary Timothy Geithner watches from the West Wing Colonnade of the White House in Washington, Friday, June 25, 2010, as President Obama speaks to members of the media, prior to traveling to Canada to attend the G-20 summit. (AP Photo/Pablo Martinez Monsivais)

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President Obama returns a salute prior to boarding Air Force One at Andrews Air Force Base, Md., Friday, June 25, 2010, prior to traveling to Canada for the G-20 summit. (AP Photo/Charles Dharapak)

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President Obama boards Air Force One at Andrews Air Force Base, Md., Friday, June 25, 2010, en route to Canada for the G-20 summit. (AP Photo/Charles Dharapak)

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President Obama is greeted on the tarmac by David Jacobson, the U.S. ambassador to Canada, left, Chief of Protocol Robert William Peck, second from left, and U.S. Consul General Kevin Johnson, right, as he arrives at Pearson International Airport in Toronto, Friday, June 25, 2010, for the G-8 and G-20 Summit. (AP Photo/Carolyn Kaster)