7338
Obviously , G ( X ) / G ^ 0 ( X ) = G. One also introduces the effective gauge group \ overline G ( X ) = G ( X ) / Z where Z is the center of a gauge group G ( X ) .
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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:
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