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" Ancient Engines " is a science fiction short story published in 1999 by Michael Swanwick .
 person: Michael Swanwick
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: Michael Swanwick 
Answer:
 person: Michael Swanwick