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During the bulk of the period from the early 1970s until 1979 , Tate served as a radio station program director for " popular music " radio stations , where his duties occasionally required him to serve on-the-air as well .
 Tate
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Tate