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As youth age out of the foster care system at age 18 , they are expected to become self-sufficient immediately , even though on average youth in the United States are not expected to reach self-sufficiency until age 26 .
 location: United States
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: United States 
Answer:
 location: United States