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It also urged all parties concerned to engage in negotiations to find a political solution , co-operating with the efforts of the European Community and the support of the Organization for Security and Co-operation in Europe .
 European Community, Organization for Security and Co-operation in Europe
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 European Community, Organization for Security and Co-operation in Europe