189372
He is one of the servants who was believed to have known of the existence of Grand Duchess Anastasia who was believed to have escaped during the execution of the royal family .
 Grand Duchess Anastasia
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Grand Duchess Anastasia