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When the impious Julian descended into Persia to do battle with Shapur and died there , struck in the side by a missile , Shapur was convinced that this had happened by God ’s will , because he had impiously persecuted the people of Christ .
 Julian, Shapur, Shapur
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Julian, Shapur, Shapur