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In particular , " G " the symmetric group on " n " + 1 points and " K " the symmetric group on " n " points forms a Gelfand pair for every " n " ≥ 1 .
 person: Gelfand
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: Gelfand