16698
At the beginning of the 8th century , on the left bank of Dnieper , between the upper Oka and Don , is the contemporary Volyntsevo culture , which also retains many traits of the previous Penkovka culture .
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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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