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Starter Doug Fister , who was acquired at the trade deadline , provided an immediate spark , going 8 – 1 over the final two months of the season with a sparkling 1.79 ERA .
 person: Doug Fister
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 person: Doug Fister