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Associated Press
Paratriathlete motions to stand up after swimming in the waters of Copacabana Beach during a training session, in Rio de Janeiro, Brazil, Friday, July 31, 2015. The Brazilian government's data on water pollution in Rio de Janeiro show water near where triathletes are preparing to compete this weekend is "unfit" for swimming. The most recent pollution reading at Copacabana was taken from a sample this past Monday. An Olympic qualifier and Paratriathlon event begins Saturday, and several athletes were already getting into the water Friday morning. (AP Photo/Silvia Izquierdo)

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