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It 's a Hit is an American children 's show that aired on CBS on Saturday mornings from June 1 , 1957 to September 21 , 1957 .
 organization: CBS
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
 Entities: CBS 
Answer:
 organization: CBS