Miriam and Facundo Karazey, an Argentinian couple taking part at the 5th Tango Dance World Championship, posse for photographers in Buenos Aires, Tuesday, Aug.14, 2007. The 5th Tango Dance World Championship will be held in Buenos Aires from August 16th to 26th. More than 450 couples from different parts of the world will be participating in the competition.(AP Photo/Natacha Pisarenko)