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The Pope wanted him to report discreetly about the conditions in which Tommaso Campanella was being held in the Castel Sant'Elmo where he had been held since his imprisonment in 1600 for unorthodox views and rebellion .
 Tommaso Campanella, Castel Sant'Elmo
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:
 Tommaso Campanella, Castel Sant'Elmo