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In 1926 , the station had become a charter member of NBC Radio , broadcasting NBC Red Network programming , before CBS leased them out in 1936 in response to WBZ being leased by NBC for its Blue Network in 1932 .
 organization: NBC; organization: NBC; organization: CBS; organization: NBC
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: NBC, NBC, CBS, NBC 
Answer:
 organization: NBC; organization: NBC; organization: CBS; organization: NBC