54091
Joanna and Llewelyn 's marriage is marred by resentment from Llewelyn 's illegitimate son , Gruffydd .
 Joanna, Llewelyn, Llewelyn, Gruffydd
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Joanna, Llewelyn, Llewelyn, Gruffydd