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He played a leading part in the post-war settlements at the end of both world wars , making significant contributions towards the creation of the League of Nations and the United Nations .
 organization: League of Nations; organization: United Nations
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
 Entities: League of Nations, United Nations 
Answer:
 organization: League of Nations; organization: United Nations