2557
He has served as United States Ambassador to Afghanistan ( 2011 to 2012 ) and as United States Ambassador to Iraq ( 2007 to 2009 ) .
 person: United States Ambassador to Afghanistan; person: United States Ambassador to Iraq
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 person: United States Ambassador to Afghanistan; person: United States Ambassador to Iraq