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She was ranked fifth in " Billboard " 's annual college poll of " girl singers " on July 6 , 1947 ( Jo Stafford was first ) .
 organization: Billboard; person: Jo Stafford
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: Billboard, Jo Stafford 
Answer:
 organization: Billboard; person: Jo Stafford