24378
Sixty-eight super-sized bombards were used by Mehmed the Conqueror to capture Constantinople in 1453 .
 Mehmed the Conqueror, Constantinople
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Mehmed the Conqueror, Constantinople