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Lev Mekhlis ( 6 September 1940 - May 15 , 1944 )
 person: Lev Mekhlis
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 person: Lev Mekhlis