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For The World Violation Tour in 1990 , Gahan sang lead on " Route 66 " instead of Gore .
 person: Gahan; person: Gore
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: Gahan, Gore 
Answer:
 person: Gahan; person: Gore