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At the same meeting Pyongyang confirmed it had nuclear weapons , and threatened to prove it with a " display ."
 Pyongyang: entity
Given event type and trigger, please tell me the arguments of all the listed option. Output format is "name1: role1; name2: role2". 
Event type: meet 
  Option: entity, place 
Text: {0} 
Answer:
 Pyongyang: entity