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Karan Johar was certain from the beginning that he wanted to cast Shah Rukh Khan in the lead role , having observed him during the making of " Dilwale Dulhania Le Jayenge " .
 Karan Johar, Shah Rukh Khan
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Karan Johar, Shah Rukh Khan