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In December 2012 Prime Minister David Cameron announced that the combat mission would end in 2014 , and troop numbers gradually fell as the Afghan National Army took over the brunt of the fighting .
 person: David Cameron; organization: Afghan National Army
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
 Entities: David Cameron, Afghan National Army 
Answer:
 person: David Cameron; organization: Afghan National Army