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Marriage to Arthur 's brother depended on the Pope granting a dispensation because canon law forbade a man to marry his brother 's widow ( Lev. 18:16 and Deuteronomy 25 : 5 – 10 required levirate marriage . ) .
 Arthur
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Arthur