503
A summit between Sharon and his Palestinian counterpart , Mahmoud Abbas , had been planned for Wednesday but was postponed , according to Israeli and Palestinian officials , who blamed each other for the delay .
 Sharon: entity; counterpart: 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:
 Sharon: entity; counterpart: entity