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Karl Hilmer " Pike " Johnson ( September 30 , 1896 – November 8 , 1985 ) was a professional football player in the American Professional Football Association ( later renamed the National Football League in 1922 ) for the Akron Pros .
 Pike, Johnson, National Football League, Akron Pros
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Pike, Johnson, National Football League, Akron Pros