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With the fall of the Lombard Kingdom in 774 the early-medieval district of Persiceto ( later San Giovanni in Persiceto ) , that stretched up to stream Samoggia , fell under the rule of the County of Modena , then the Abbey of Nonantola exercised its power on the territory , and since the 9th century it was handed over to the County of Bologna .
 Persiceto, Giovanni, Persiceto, Modena, Nonantola, Bologna
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Persiceto, Giovanni, Persiceto, Modena, Nonantola, Bologna