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The name Douce noir itself means " sweet black " in French which is similar to the Italian name of the Piedmont grape Dolcetto nero ( " small sweet black " ) which further lead to speculation that Douce noir had Piedmontese origins .
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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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