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His brother Shankar Dayal Sharma ( August 19 , 1918 - December 26 , 1999 ) was the 9th President of the Republic of India , serving from 1992 to 1997 .
 Shankar Dayal Sharma
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Shankar Dayal Sharma