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With opposition hardening , the White House left open the possibility Tuesday that it would not seek a United Nations vote on its war - making resolution if the measure was headed for defeat .
 the White House, it, its, United Nations
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: organization, person, geographical social political, vehicle, location, weapon, facility 
Text: {0} 
Answer:
 the White House, it, its, United Nations