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He also starred in the Sunday-morning television program Marshall Efron 's Illustrated , Simplified , and Painless Sunday School on CBS from 1973 to 1977 .
 Marshall Efron, CBS
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Marshall Efron, CBS