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He split 2007 between the Greeneville Astros ( 17 games , four starts ) and Tri-City ValleyCats ( two games ) , going a combined 6-4 with a 4.25 ERA , with 59 strikeouts in 53 innings .
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Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
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