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She read Physics as an undergraduate at Merton College , Oxford before taking a Masters degree in Economics and Environmental Economics at Birkbeck , University of London .
 Merton College , Oxford, Birkbeck , University of London
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Merton College , Oxford, Birkbeck , University of London