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All 38 surviving men who had taken part in the rebellions were arrested by the navy and imprisoned in the Tower of London ; though many died from natural causes , the remaining 16 were eventually sent to Barbados , to work on sugar cane plantations .
 Tower of London, Barbados
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:
 Tower of London, Barbados