159177
He returned to Treasury during the first two years of the Barack Obama administration , after which he returned to his teaching post at Michigan .
 organization: Treasury; person: Barack Obama; organization: Michigan
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: Treasury, Barack Obama, Michigan 
Answer:
 organization: Treasury; person: Barack Obama; organization: Michigan