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Munich : Mossad 's Revenge is a documentary produced by Atlantic Productions and aired on Channel 4 in Britain concerning Operation Wrath of God , the Israeli assassination campaign that was organized in response to the Munich Massacre .
 Channel 4
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Channel 4