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His poetry , as well as that of Dietmar von Eist ( Aist ) , suggest that there may have existed a poetic form indigenous to the Upper Germany/Austria territory before the impact of the Provençal influence .
 Dietmar von Eist
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Dietmar von Eist