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With Nebbiolo 's long recorded history of being cultivated in the Piedmont region since at least the 12th century , wine historians and ampelographers largely believe that Rossola nera is likely the offspring in that relationship .
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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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