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Additional research by Caroline Hoxby shows that when voucher systems are available , both the public and private schools in that school system have increased test scores and graduation rates .
 person: Caroline Hoxby
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: Caroline Hoxby 
Answer:
 person: Caroline Hoxby