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Sanya Station is the ( notionally ) southern terminal of both the Hainan Eastern Ring Railway and the Hainan Western Ring Railway .
 Sanya, Hainan, Hainan
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Sanya, Hainan, Hainan