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The libretto is a revised version of the play The Indian Queen ( 1664 ) by John Dryden and Sir Robert Howard .
 person: John Dryden; person: Sir Robert Howard
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: John Dryden, Sir Robert Howard 
Answer:
 person: John Dryden; person: Sir Robert Howard