Italy's dancers Eloina Martins, left, and Paolo Nelzi, second from left, among others, wait before competing during the 2012 Tango Dance World Cup in Buenos Aires, Argentina, Monday, Aug. 20, 2012. The two-week long event offers more than 500 free dance lessons, concerts and recitals. Hundreds of professional dancers compete in the championship and teach many the eight basic steps of the dance in the city where it was born. (AP Photo/Natacha Pisarenko)
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