18025
In July 1957 , NBC returned the program to a talk / variety show format once again , with Jack Paar ( who left his role as morning show host on CBS to join NBC ) becoming the new solo host of the show .
 NBC, Jack Paar, CBS, NBC
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 NBC, Jack Paar, CBS, NBC