Canada

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Canada's Brianne Theisen Eaton, right, and Ukraine's Ganna Melnichenko clear a hurdle in the 60m hurdles of the women's pentathlon during the Athletics Indoor World Championships in Sopot, Poland, Friday, March 7, 2014. (AP Photo/Matt Dunham)

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Canada's Brianne Theisen Eaton competes in the 60m hurdles race of the women's pentathlon during the Athletics World Indoor Championships in Sopot, Poland, Friday, March 7, 2014. (AP Photo/Petr David Josek)

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Cameron Bishop of Ottawa, Canada fires an electronic gun at a computer screen run by the National Rifle Association at the Conservative Political Action Conference (CPAC) held at the Gaylord Hotel, National Harbor, Md., Thursday, March 6, 2014. (Andrew Harnik/The Washington Times)

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FILE - In this July 6, 2013 file photo, emergency workers examine the aftermath of a train derailment and fire in Lac-Megantic, Quebec, Canada. Forty-seven people were killed. U.S. federal regulators are further tightening testing requirements for companies that transport oil by rail after a spate of explosions caused by crude train derailments in the U.S. and Canada. The action on Thursday, March 6, 2014 from the U.S. Department of Transportation builds on a Feb. 25 order that targeted oil shipments for more stringent testing. (AP Photo/Ryan Remiorz, File, Pool)

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UNLV's Khem Birch, of Canada, left, covers a shot form San Diego State's Winston Shepard during the first half of an NCAA college basketball game on Wednesday, March 5, 2014, in Las Vegas. (AP Photo/Isaac Brekken)