BY COURT ORDER, THESE IMAGES ARE FREE TO USE. PRETORIA, SOUTH AFRICA - APRIL 17: (SOUTH AFRICA OUT) Prosecutor Gerrie Nel questions forensic geologist, Roger Dixon, in the Pretoria High Court on April 17, 2014, in Pretoria, South Africa. Oscar Pistorius stands accused of the murder of his girlfriend, Reeva Steenkamp, on February 14, 2013. This is Pistorius' official trial, the result of which will determine the paralympian athlete's fate. (Photo by Alet Pretorius/Foto24/Gallo Images/Getty Images)
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