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Ongole railway station , located in the India n state of Andhra Pradesh , serves Ongole in Prakasham district .
 Ongole, India, Andhra Pradesh, Ongole, Prakasham district
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Ongole, India, Andhra Pradesh, Ongole, Prakasham district