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Moshe Feinstein ruled that if a married woman is inseminated by sperm from another man the child is not a " mamzer " , since it did not result from an act of adultery ; Joel Teitelbaum ( 2005 ) disagreed , and ruled that since the child is known to be that of a man other than her husband it is a " mamzer " .
 Moshe Feinstein, Joel Teitelbaum
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: media, plant, vehicle, astronomical object, time, disease, animal, location, person, organization, mythical figure, food, biology, geographical phenomenon, instrument, event 
Text: {0} 
Answer:
 Moshe Feinstein, Joel Teitelbaum