260708
In order to settle the matter Tómméne , the Archbishop of Armagh , with some other Ulster bishops and clergy , sent a letter in the first half of 640 to Pope Severinus setting out both sides of the argument and requesting his advice .
 Pope Severinus
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Pope Severinus