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The Memorial Union , or MU , at Iowa State University opened in September 1928 , the building is currently home to a number of University departments , a bowling alley , the University Book Store , and the Hotel Memorial Union .
 Iowa State University
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Iowa State University