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During the Age of Enlightenment both the gimmal rings and posie rings were popular , although the latter was more often used as an expression of sentiment than to indicate a formal engagement .
 Age of Enlightenment
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:
 Age of Enlightenment