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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 .
 organization: Merton College , Oxford; organization: Birkbeck , University of London
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
 Entities: Merton College , Oxford, Birkbeck , University of London 
Answer:
 organization: Merton College , Oxford; organization: Birkbeck , University of London