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Cultural critic Clement Greenberg wrote that a good critic excels through " insights into the evidence … and by … loyalty to the relevant " ; poet and critic T.S. Eliot wrote " a critic must have a very highly developed sense of fact " .
 Clement Greenberg, T.S. Eliot
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: media, plant, vehicle, astronomical object, time, disease, animal, location, person, organization, mythical figure, food, biology, geographical phenomenon, instrument, event 
Text: {0} 
Answer:
 Clement Greenberg, T.S. Eliot