196209
After a stable peace agreement with the Byzantines in the west , Khosrau I was now able to focus his attention on the eastern Hephthalites and avenge his grandfather .
 Khosrau I
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Khosrau I