349458
For other uses , see Serapion Serapion was a martyr during the reign of Emperor Septimius Severus .
 Serapion Serapion, Emperor Septimius Severus
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Serapion Serapion, Emperor Septimius Severus