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Zurich Chess Challenge 2012 The Zurich Chess Club 2012 was a six-game chess match between Vladimir Kramnik ( Russia ) and Levon Aronian ( Armenia ) from 21 to 28 April 2012 .
 Zurich, Zurich, Vladimir Kramnik, Russia, Levon Aronian, Armenia
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Zurich, Zurich, Vladimir Kramnik, Russia, Levon Aronian, Armenia