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Jim Zabel is an American radio and television broadcaster best known for serving as the play-by-play announcer for Iowa Hawkeye football games for 49 years on WHO ( AM ) Radio .
 Jim Zabel, Iowa Hawkeye
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Jim Zabel, Iowa Hawkeye