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An eternity ring is a lady 's ring , worn on the hand , comprising a band of precious metal ( usually gold ) set with a continuous line of identically cut gemstone s ( usually diamond s ) to symbolize never-ending love , usually given from a husband to his wife on the occasion of a significant anniversary .
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Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
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