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A rare black swan floating on Budworth Mere at Marbury Park, Comberbach, Northwich, Cheshire, England Stock Photo - Alamy
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The Black Swan: The Impact of the Highly Improbable (Incerto): Taleb, Nassim Nicholas: 9781400063512: Amazon.com: Books
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Flock Of White Swans With One Black Swan - Expectional, Rare, Different And Unexpected Animal Stock Vector - Illustration of exception, inappropriate: 129076684
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