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In 1803 Ilia himself witnessed the killing of the Russian general Ivan Lazarev by his mother , Queen Dowager Mariam , when Lazarev tried to force her out of her bedroom for resettlement in Russia .
 person: Mariam
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: Mariam 
Answer:
 person: Mariam