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The school also employed a number of the nation 's leading scientists , including Enrico Fermi and Edward Teller , along with operating the famous Yerkes Observatory .
 Enrico Fermi, Edward Teller, Yerkes Observatory
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Enrico Fermi, Edward Teller, Yerkes Observatory