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Chechen militants were blamed but no Chechen field commander accepted responsibility for the bombings and Chechen president Aslan Maskhadov denied any involvement of his government .
 person: Aslan Maskhadov
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: Aslan Maskhadov 
Answer:
 person: Aslan Maskhadov