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Career Gerhard Kollewe joined the military service of the Reichswehr , serving in the 7th Infantry Regiment , after graduating from Gymnasium ( secondary school ) in 1931 .
 person: Gerhard Kollewe
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: Gerhard Kollewe