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KWWF channel 22 ( RTN ) , which operated from Waterloo , ceased broadcasting in 2013 .
 organization: KWWF; organization: RTN; location: Waterloo
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 organization: KWWF; organization: RTN; location: Waterloo