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United Nations Security Council Resolution 1900 , adopted unanimously on December 16 , 2009 , after recalling resolutions 827 ( 1993 ) , 1581 ( 2005 ) , 1597 ( 2005 ) , 1613 ( 2005 ) , 1629 ( 2005 ) , 1660 ( 2006 ) , 1668 ( 2006 ) , 1800 ( 2008 ) , 1837 ( 2008 ) , 1849 ( 2008 ) and 1877 ( 2009 ) , the Council permitted several judges at the International Criminal Tribunal for the former Yugoslavia to serve beyond the expiry of their term of office to enable them to complete work on cases in which they were involved .
 United Nations, Yugoslavia
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 United Nations, Yugoslavia