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ABC News producer David Kaplan was killed by sniper fire in the Balkans in 1992 .
 the Balkans, ABC News, ABC News producer, ABC News producer David Kaplan, sniper
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: organization, person, geographical social political, vehicle, location, weapon, facility 
Text: {0} 
Answer:
 the Balkans, ABC News, ABC News producer, ABC News producer David Kaplan, sniper