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At the same time , the district 's two middle schools , North Middle and East Middle , were merged to form Alton Middle School , which is located at Alton High School 's former campus .
 Alton, Alton
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Alton, Alton