207679
During the difficult discussions in order to get a new government at the end of 2007 , Cathy Berx was a top staff member of Yves Leterme , who later became Prime Minister of Belgium .
 person: Cathy Berx; person: Yves Leterme
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
 Entities: Cathy Berx, Yves Leterme 
Answer:
 person: Cathy Berx; person: Yves Leterme