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The Hyderabad-Karanataka region comprise of Gulbarga , Yadgir , Raichur , Koppal , Bidar and Bellary district s in the present state of Karnataka , The Hyderabad-Karanataka region is the second largest arid region in India .
 Gulbarga, Raichur, Koppal, Bidar, Bellary district, Karnataka, India
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
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Answer:
 Gulbarga, Raichur, Koppal, Bidar, Bellary district, Karnataka, India