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According to Gregory of Tours , the years following Gundobad 's return to Burgundy saw a bloody consolidation of power .
 person: Gregory of Tours; person: Gundobad; location: Burgundy
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: Gregory of Tours; person: Gundobad; location: Burgundy