285209
Background The piece is thought to have been composed in either 1920 or 1921 , before Horowitz left Russia .
 person: Horowitz; location: Russia
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: Horowitz, Russia 
Answer:
 person: Horowitz; location: Russia