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Along with Charles Seeger , he organized a massive research and recording campaign centered on American music .
 person: Charles Seeger
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: Charles Seeger 
Answer:
 person: Charles Seeger