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He requested the United Nations , the European Union , the US and Russia to put forward a new joint proposal to force both warring parties of the Bosnia - Herzegovina to return to the negotiating table .
 geographical social political: the European Union; geographical social political: the US; geographical social political: Russia; geographical social political: the Bosnia - Herzegovina; organization: the United Nations; organization: both warring parties of the Bosnia - Herzegovina
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: geographical social political, organization, person, location, facility, vehicle, weapon 
Text: {0} 
Answer:
 geographical social political: the European Union; geographical social political: the US; geographical social political: Russia; geographical social political: the Bosnia - Herzegovina; organization: the United Nations; organization: both warring parties of the Bosnia - Herzegovina