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Ukraine 's pro- Russia rebels hand over Malaysia Airlines #MH17's black boxes http://t.co/sWs4wDau3m http://t.co/9GyZCurIkM
 Ukraine, Russia, Malaysia Airlines
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Ukraine, Russia, Malaysia Airlines