88
But China remains a key Russian ally , demonstrated by the fact that Hu will be the only foreign leader apart from US President George W . Bush to hold a summit with Putin in the days surrounding the Saint Petersburg festivities .
 Hu: entity; George W . Bush: entity; Putin: 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:
 Hu: entity; George W . Bush: entity; Putin: entity