52898
His most significant legacy to the Soviet Union was his discovery and promotion of Mikhail Gorbachev .
 location: Soviet Union; person: Mikhail Gorbachev
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: Soviet Union, Mikhail Gorbachev 
Answer:
 location: Soviet Union; person: Mikhail Gorbachev