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Putt & Putter is a miniature golf game released for the Sega Master System in April 1992 and Sega Game Gear in December 1991 .
 Sega, Sega
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Sega, Sega