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Here to debate medical malpractice reform are consumer advocate Ralph Nader and Dr . Donald Palmisano , the president - elect of the American Medical Association .
 president: person; American Medical Association: 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: start position 
  Option: person, entity, place 
Text: {0} 
Answer:
 president: person; American Medical Association: entity