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Rexford did her undergraduate studies at Princeton , earning a bachelor 's degree in electrical engineering in 1991 , and then moved to the University of Michigan for graduate studies in computer science and engineering , earning a masters degree in 1993 and a doctorate in 1996 .
 Princeton, University of Michigan
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Princeton, University of Michigan