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The UNCCD has been ratified by 197 states : all 193 UN Member States , the Cook Islands , Niue , the State of Palestine and the European Union .
 UN Member States, Cook Islands, Niue, State of Palestine, European Union
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 UN Member States, Cook Islands, Niue, State of Palestine, European Union