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He began his coaching career as an assistant at AZ and then NEC .
 organization: AZ; organization: NEC
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: AZ, NEC 
Answer:
 organization: AZ; organization: NEC