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Erwin Keller ( April 8 , 1905 – 1971 ) was a field hockey player from Germany , who won the silver medal for his native country at the 1936 Summer Olympics in Berlin .
 person: Erwin Keller; location: Germany; location: Berlin
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: Erwin Keller, Germany, Berlin 
Answer:
 person: Erwin Keller; location: Germany; location: Berlin