818
The announcement came as U . S . President George W . Bush and South Korean President Roh Moo - hyun were about to meet Wednesday in Washington to discuss North Korea ' s nuclear programs .
 Washington: place; George W . Bush: entity; Roh Moo - hyun: 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:
 Washington: place; George W . Bush: entity; Roh Moo - hyun: entity