8568
His paternal grandparents were Sultan Abdul Hamid I and Sultana Nakşidil Sultan .
 Abdul Hamid I, Sultana, Nakşidil Sultan
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Abdul Hamid I, Sultana, Nakşidil Sultan