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He received a silver medal in the 6 metre class with the boat Elisabeth X at the 1952 Summer Olympics in Helsinki , together with Johan Ferner , Erik Heiberg , Tor Arneberg and Carl Mortensen .
 location: Helsinki; person: Johan Ferner; person: Erik Heiberg; person: Tor Arneberg; person: Carl Mortensen
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: Helsinki, Johan Ferner, Erik Heiberg, Tor Arneberg, Carl Mortensen 
Answer:
 location: Helsinki; person: Johan Ferner; person: Erik Heiberg; person: Tor Arneberg; person: Carl Mortensen