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Hedong Township ( ) is a township of Guide County , in the east of Hainan Tibetan Autonomous Prefecture in eastern Qinghai province , China , located adjacent to and east of the county seat .
 Hainan Tibetan Autonomous Prefecture, Qinghai
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Hainan Tibetan Autonomous Prefecture, Qinghai