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Dutch princess Maxima swims through a canal of Amsterdam on September 9, 2012, as she takes part in the Amsterdam City Swim, a charity event organized to fund the battle against the amyotrophic lateral sclerosis, a motor neuron disease. AFP PHOTO / ANP / ROBIN UTRECHT *** netherlands out - belgium out *** (Photo credit should read ROBIN UTRECHT/AFP/GettyImages)

Dutch princess Maxima swims through a canal of Amsterdam on September 9, 2012, as she takes part in the Amsterdam City Swim, a charity event organized to fund the battle against the amyotrophic lateral sclerosis, a motor neuron disease. AFP PHOTO / ANP / ROBIN UTRECHT  *** netherlands out - belgium out ***        (Photo credit should read ROBIN UTRECHT/AFP/GettyImages)