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Gresser studied classics as an undergraduate at Radcliffe College and won a fellowship for classical studies at the American School of Classical Studies in Athens , Greece .
 Athens , Greece, Greece, Radcliffe College, the American School of Classical Studies in Athens , Greece, Gresser, an undergraduate at Radcliffe College
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: geographical social political, organization, person, location, facility, vehicle, weapon 
Text: {0} 
Answer:
 Athens , Greece, Greece, Radcliffe College, the American School of Classical Studies in Athens , Greece, Gresser, an undergraduate at Radcliffe College