Olympic champs highlight Brazil equestrian event

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Granddaughter and sole heiress of the late shipping tycoon Aristotle Onassis, Athina Onassis, left, and her husband, Brazilian professional show jumper Alvaro "Doda" de Miranda, speak at the Athina Onassis International Horse Show 2012 in Rio de Janeiro, Brazil, Thursday, Oct. 4, 2012. The show which is considered the largest equestrian event in Latin America brings together the best riders in the world competing in jumping and dressage. (AP Photo/Silvia Izquierdo)Seven Olympic champions and nine out of the world's 10 top-ranked riders are in Rio de Janeiro for Latin America's most important equestrian event, which kicked off on Thursday.