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LONDON, ENGLAND - SEPTEMBER 04: David Weir of Great Britain crosses the line to win gold in the Men's 1500m - T54 Final on day 6 of the London 2012 Paralympic Games at Olympic Stadium on September 4, 2012 in London, England. (Photo by Julian Finney/Getty Images)

LONDON, ENGLAND - SEPTEMBER 04:  David Weir of Great Britain crosses the line to win gold in the Men's 1500m - T54 Final on day 6 of the London 2012 Paralympic Games at Olympic Stadium on September 4, 2012 in London, England.  (Photo by Julian Finney/Getty Images)