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Ghalib ( ; ) born Mirza Asadullah Baig Khan ( Urdu / Persian : ) , on 27 December 1797 – died 15 February 1869 ) , was a classical Urdu and Persian poet from the Mughal Empire during British colonial rule .
 Ghalib, Khan, Mughal Empire
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:
 Ghalib, Khan, Mughal Empire